{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174854123",
    "entityType": "Track",
    "nonce": "0xe1368f8a341cee8afaf5f70d6010bbbe177dcf7893dc2c8784b5c9088959d201",
    "signature": "0x7b4f153511dc4ca53982ecbf53ce527c6619abfe2f98cc4a218d47352622568834a8a4ee3882859c33b8f492f5b45ad02a23a012594649138fff3d943ee90c221c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}