{
  "manageEntity": {
    "action": "Save",
    "entityId": "1896682767",
    "entityType": "Track",
    "nonce": "0xc2f175e0dcebfa51a24effdf096f6b992987bd51868b85d7c0db67a92470d32f",
    "signature": "0x9e12ef7d7e088875c1290d7e18a473914537405666b64ba532d3e3809b75f86b36708d9e83892d37813bf3bc92a343bcab19fd5f0fbab080a1b006a5b831f3d31c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}