{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054967175",
    "entityType": "Track",
    "nonce": "0xdc8683aa8b33b24bb42305cbfa6179021d67f987d63468497fd19bdd51122a6e",
    "signature": "0x3597f838c2eed27853303b22f2b8d817e4948d2cb91f38b66ca8a65eac0d23d363e811dc9b031562caa2114840e78beeb044099b25579ea8924438f4708bff521b",
    "signer": "0x4dafC3e774A1033C5604372f17ccBDcE545f478D",
    "userId": "889450527"
  }
}