{
  "manageEntity": {
    "action": "Save",
    "entityId": "956738",
    "entityType": "Track",
    "nonce": "0xe50d840e05482fedb115c6c0e5f25dbebe7b7615dbb641d173fd651f606cdfa5",
    "signature": "0x43e0f81065b8d53724cb7db5c59489e3c7aec9d9eb096cb342a5635c50c3d7d13b0f1be2fb963c34a1ce974fe74bd79fdc76fddd172b4921605487018397d0061b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}