{
  "manageEntity": {
    "action": "Save",
    "entityId": "822979769",
    "entityType": "Track",
    "nonce": "0xe9c289551290fa27e422d047a6d569930a14f698ab2b8add072f0d4d18f41956",
    "signature": "0x361b2648b2d561a345ea413cd2dca436dde170491636132c269368df892205bf6150fbba925a5ad18099eec6aaf2fb052467660d0f2d7eaebc341564d62eabfe1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}