{
  "manageEntity": {
    "action": "Save",
    "entityId": "1964054263",
    "entityType": "Track",
    "nonce": "0x4533149c76befedf42b64c3f8db1edf4c6c3eba2fd2bfa671ddb2603ada0b166",
    "signature": "0xd6b80508b33d9976364b21f95898c74de996e674849c81acdc5665a274ea85eb1a28079b134848e9f2df7ed3a34bac886401e1220b79425daf013fab23962fbd1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}