{
  "manageEntity": {
    "action": "Save",
    "entityId": "319049",
    "entityType": "Track",
    "nonce": "0xbae6ef9429a72432309f132d7ad624cb5abaf7a52155535000991bda2d313f64",
    "signature": "0x363d1d4399781eb2909da2f1068e8fb006d46ad856aaabee577205b1b78e13a97509ea52acdbd5ceec40564eb4b6c65c3963107d9665e0b2302abf029db93f111b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}