{
"manageEntity": {
"action": "Save",
"entityId": "252054",
"entityType": "Track",
"nonce": "0x3eb442d8143096d5724c5c4ba58f30b2b71ac20b5427c2412ab07f50544d366e",
"signature": "0x62ccdf1138be1804888990fa97ba7f7d70c6d6031f5aeab1b629f2fdf2a858ba3dd562f3b712f301ace3792dfa194982dcf8dc687234dfce80e2c550ed8b622d1c",
"signer": "0x95a0577B4ACBBCBF64B0A1006e780C6dd88dCB37",
"userId": "408104511"
}
}