{
  "manageEntity": {
    "action": "Save",
    "entityId": "328273279",
    "entityType": "Track",
    "nonce": "0x2c1df7ad701a02135dc9da69a199f6c3df05c4fbf2fc2414c9e7e17459bcf9c0",
    "signature": "0x2bd0b24df8972654826398c7eb28aa8703e21f27e68439f1915d62906456471b6123a44e9fe0752d7e481aecd82bb4fc688b40e58cf843f183292231a43bcdd41b",
    "signer": "0x65A498876e76FaEED5676cb4d0B469cD5A7F44Df",
    "userId": "61841583"
  }
}