{
  "manageEntity": {
    "action": "Create",
    "entityId": "2044989894",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":null,\"data\":{\"track_id\":2044989894,\"title\":\"6ac1a0e8266bb0166b30655f028c3e7a\",\"genre\":\"Electronic\",\"is_unlisted\":true,\"is_downloadable\":false,\"is_original_available\":false,\"comments_disabled\":true,\"access_authorities\":null,\"field_visibility\":{\"genre\":false,\"mood\":false,\"tags\":false,\"share\":false,\"play_count\":false,\"remixes\":false},\"owner_id\":715160400,\"track_cid\":\"baeaaaiqsedq6b3x4cb4nwdii4m7wklwy5d2hyp3ipojqqq5l5twgiika4pviy\",\"orig_file_cid\":\"baeaaaiqseddcesgk4jcjqx4olxuemusi6po2w7wz3ugnkrkabergndsutze34\",\"orig_filename\":\"97478d42c79eb82d3a8224782c885052.flac\",\"audio_upload_id\":\"7eaf37926ad41aaf8a3ea9a3be95aae9\",\"duration\":270,\"cover_art_sizes\":\"baeaaaiqsecujmnc6lvohwzugmvd6yu6sgpsjyazz6z7wijiufqyvskijrueki\"}}",
    "nonce": "0x7d28e6408cc25bf00b13b585ba696425e517beb5f4b1eeb6891bf86e462a2fa8",
    "signature": "0x1f3fcdfb6e592db011221dbaa73b6df5c08aefb89a50cf67b71d4cf0c647dce45ffc94ae4554ba477a4f9e353a3cfc17f8615ecf2a62df1072cfde69ab122a271b",
    "signer": "0x98F4295af45c93F3802F70FC0811654a74df1e73",
    "userId": "715160400"
  }
}