{
  "manageEntity": {
    "action": "Save",
    "entityId": "1093855334",
    "entityType": "Track",
    "nonce": "0xdcf6ea68dbf036a04af312a3d88650fe226840a7b4b9f3be00ac3029ebf7acfa",
    "signature": "0x2e879dbff6f83b2530205411f6ab2bd6f35f375b167c597a0a51d7d39c47b8fc4e3d11811d9d6d362615d99cf9d8e9e180394cca83a0838831f3ac5dd6a2ff3b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}