{
  "manageEntity": {
    "action": "Save",
    "entityId": "1934292124",
    "entityType": "Track",
    "nonce": "0x8e91dcf1bc27e6158045bcf87859dfae87d3a66921da578daa2f141ed27cf12e",
    "signature": "0x19406bbc884751499ca1a033635633cc59e086e0137931884b70faffeacd4e99087ecf18962c4d976a9c35a4bb3f5278cc0d68f9ea6b72fd18e21bea28efe72a1c",
    "signer": "0x1A0e34aBD5374BDd677c5de4D5D9718089cB05Eb",
    "userId": "644286186"
  }
}