{
  "manageEntity": {
    "action": "Save",
    "entityId": "34005089",
    "entityType": "Track",
    "nonce": "0x726bbf841db126d3864c8dfab4a8616548bf3b7e6d58257471a78b47d9556d6e",
    "signature": "0xfa646b8ded91e8cc5b12e7bf5b68125dc3c01ef5460299d9eb5295ab42d1dfd7101239bff74f586e32399a3cfa2d0fea78bf4983199d449cf4675f5a8623d8ce1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}