{
  "manageEntity": {
    "action": "Save",
    "entityId": "37262542",
    "entityType": "Track",
    "nonce": "0x265db51b290e4d8dbbefa007bbe219ad6008fc8e2c366f2bcbbcad9d1e43f40f",
    "signature": "0xe5be96f7e2601fa646808217881e4abb4ac0ce5e684b8bc24fb8ef96ece4915c421af96c82a371e199c4c1d83fe63652664af9beb568b367e2502d7249a8766c1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}