{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090229",
    "entityType": "Track",
    "nonce": "0x948d68a57f3251f3bd4d35c1fccf221f62d9f4e89c6bd2251f8fdd0cb69a8247",
    "signature": "0x268e1bb274fecd7603f554f34255fb2e4239b4e94bd8e46e2729b88a8224de3243e4d5a99bbe2d6653458794dc7b01fd688e24b18d8d7309e7a44c50afa4641c1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}