{
  "manageEntity": {
    "action": "Save",
    "entityId": "1886505297",
    "entityType": "Track",
    "nonce": "0x6c5a1769ac4a143be682cc90a153cabe3ab02b86369c49b1b1c6272e02d12f00",
    "signature": "0x858372fa3e780da69edde52e67ccc0d03761925fc5e40e011f0138a143171dfe0d6d98827b25ed598d1ade6f15a19b2b64b6efe93ac0c972b697b09d2915d8471b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}