{
"manageEntity": {
"action": "Save",
"entityId": "606578440",
"entityType": "Track",
"nonce": "0xc0a28e92cb82f1f24d85f6d2127a650d621a27fcec32d36541b391f35e55dfe3",
"signature": "0x3529786e5142d2b97a3a86bb79675e166d7ba6b5559c58329a868b8f8387e6e107845e288d4d59e554ece664db4412f1f9a202ab99de4a3ea5f4ef2b2f821f3d1c",
"signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
"userId": "633924738"
}
}