{
  "manageEntity": {
    "action": "Save",
    "entityId": "2034681874",
    "entityType": "Track",
    "nonce": "0x934685f8b76e90ba514164ed35bbf160c59da295e34f682023a0ca1aaa4910b3",
    "signature": "0xa480e70a08e9084e43912da7a664f7dc1b973038407d1a7ce189656d08a99c0d41c30418305e9a829751635fb26d38de19b245632580f2495254de9100496b541c",
    "signer": "0xd14727622fa26ECD6Ad72cADB6b96823f5fb65DD",
    "userId": "173494086"
  }
}