{
  "manageEntity": {
    "action": "Save",
    "entityId": "1323695055",
    "entityType": "Track",
    "nonce": "0x9e6746f2f51423028650efe3d01f87d11a23eceda3111fcbfe0066cff3866556",
    "signature": "0x84a341af02aec824ba813761dba0cd6b8a29fba342acaee1dc498424d7a541836371c4d8a9072b738b0779322dc9cc22d93f8fcc7874eb9027c00ca7889964561c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}