session id's should be sessions string
Request model for /bulkmessage/1_n :
{
"data": {
"phone_numbers": ["905414878554", "905076154292"],
"message": "Test bulk ordinary message"
},
"config": {
"api_id":"your_api_id",
"api_hash":"your_api_hash",
"session_id": "your session string"
}
}Request model for /bulkmessage/n_n :
{
"data": [
{
"phone_number": "905439619330",
"message": "test web api 1"
},
{
"phone_number": "905414878554",
"message": "test web api 2"
},
{
"phone_number": "905076154292",
"message": "test web api 3"
}
],
"config": {
"api_id":"your_api_id",
"api_hash":"your_api_hash",
"session_id": "your session string"
}
}