Update cell Google Sheet API - google-sheets-api

Question

Trying to update a cell in a Google Sheet with the source attached, I find the error "Invalid value at 'requests[0].update_cells' (oneof), oneof field 'area' is already set. Cannot set 'start'", and I don't know what I am doing wrong
[{
"updateCells"={
"fields"="totalUpdatedCells",
"range"={
"endColumnIndex"=179,
"endRowIndex"=7,
"sheetId"=XXXXX,
"startColumnIndex"=179,
"startRowIndex"=7
},
"rows"=[
{
"values"=[
{
"userEnteredValue"={
"stringValue"="My text"
}
}
]
}
],
"start"={
"columnIndex"=179,
"rowIndex"=7,
"sheetId"=XXXXX
}
}
}]
This is the concrete error:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request
{
"code" : 400,
"errors" : [ {
"domain" : "global",
"message" : "Invalid value at 'requests[0].update_cells' (oneof), oneof field 'area' is already set. Cannot set 'start'",
"reason" : "badRequest"
} ],
"message" : "Invalid value at 'requests[0].update_cells' (oneof), oneof field 'area' is already set. Cannot set 'start'",
"status" : "INVALID_ARGUMENT"
}
A hint from where can I throw?
EDIT for #Tanaike:
The body of request:
{
"requests"= [
{
"updateCells"= {
"fields"="userEnteredValue",
"rows"= [
{
"values"= [
{
"userEnteredValue"= {
"stringValue"="My text"
}
}
]
}
],
"start"= {
"columnIndex"=179,
"rowIndex"=7,
"sheetId"=XXXXX
}
}
}
]
}
and the error of request:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request
{
"code" : 400,
"errors" : [ {
"domain" : "global",
"message" : "Invalid requests[0].updateCells: GridCoordinate.columnIndex[179] is after last column in grid[25]",
"reason" : "badRequest"
} ],
"message" : "Invalid requests[0].updateCells: GridCoordinate.columnIndex[179] is after last column in grid[25]",
"status" : "INVALID_ARGUMENT"
}

Answer 1

I put the body of the request in case another user encounters the same problem:
{
requests=[
{
updateCells={
fields=userEnteredValue,
rows=[
{
values=[
{
userEnteredValue={
stringValue=My text
}
}
]
}
],
start={
columnIndex=6,
rowIndex=178,
sheetId=XXXXX
}
}
}
]
}
Thanks to #Tanaike for helping me find the answer