{
  "manageEntity": {
    "action": "Save",
    "entityId": "16740167",
    "entityType": "Track",
    "nonce": "0xb443dbc67a7f14d3bd9b9dec0278f9bade9ec27d0c88463e60e4e83ed66ea069",
    "signature": "0xc9e6e00d4dc915591f1199e4fa46ba3ff6a89754336f6ad73b7296f312c837437b51db0583cf6f5cb20ade4f31062d953a1c72dbd4558b947b847b3ac6478d461c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}