{
  "manageEntity": {
    "action": "Save",
    "entityId": "2052288544",
    "entityType": "Track",
    "nonce": "0x8914b8996bf66b37bdc11b61738929f704dc1a83ff48a82dfd77fcfba947cdd4",
    "signature": "0x5df271ece1b9226442175f970233244a3bcecdd016251aef681e41ffe58471bb7eec0a2ed6d6447c511edc3da5219442303757559acf377dcd8c1a1eef18a3b41c",
    "signer": "0xe270C91f9476B885124d6c0208211213dC10036a",
    "userId": "94825285"
  }
}