{
  "manageEntity": {
    "action": "Save",
    "entityId": "2101163254",
    "entityType": "Track",
    "nonce": "0xc47766f292e77c262331d0bff842733c218b6aec18b1acef35dad73046a6dc5e",
    "signature": "0xe48f1ad46458e41136932456052f43294ba1aa15b41e97baa4044ee4b0f97dea4b79e60870c27cbedc7e8c9fca3e4bb6164dec65201094ca7743fbbf315e89131c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}