{
  "manageEntity": {
    "action": "Save",
    "entityId": "1763614437",
    "entityType": "Track",
    "nonce": "0xdae40002f4032bc0574802fea0230cdbfdc58e2b48df839583a80e40d67cf74b",
    "signature": "0x2e5db3ce0ba14430d3b6d1631cc99b83e5430757e3432e0180005bae17805c2c15b6240b024276f0bf70e3b4c09d261f531ef6d5cd86511ec90627b52afd57dc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}