{
"manageEntity": {
"action": "Save",
"entityId": "539935956",
"entityType": "Track",
"nonce": "0x55c8cad546b950f054bff3fba5194b06a5df79428104f0df1ef75ac4e79c9687",
"signature": "0x0f506613a5dc73fae0a154daccc4fa1acd10b5020c29e6266af731c08c02dd43359003cb8cd7726a62adbf4e9441c394b7bf508190a0c0ad7fcd6b28d0ecd02a1b",
"signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
"userId": "167557"
}
}