{
"manageEntity": {
"action": "Save",
"entityId": "1458078217",
"entityType": "Track",
"nonce": "0xa1cf50b125193a45c8b42b20535de2832d9a481945a35aa2cf3b928fc6ac2b93",
"signature": "0x46a3bdc5f6a0f1b1d5d81bcd7b19583accb3f6f1bf36635a3de36ddb7355ae5171552320b2b33e4f61e4d2c86995d80bd0efa758d6c1b036a4b06a9a550940191c",
"signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
"userId": "370091516"
}
}