{
  "manageEntity": {
    "action": "Save",
    "entityId": "1429811867",
    "entityType": "Track",
    "nonce": "0x0a7c082976e259a4c41225d7b170c63e11adf91c5a123f9153e98433cce344d4",
    "signature": "0xe6bd5af928b596b7125082c7bc81abfa253a8d5d57f6a9514fec5a34fd65027e15e3a6970a7ede11970a92e9bfe7dcd7158c913d76bc78d67a33ac4f3551960f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}