{
  "manageEntity": {
    "action": "Create",
    "entityId": "305239958",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"cover_art_sizes\":\"baeaaaiqseary4o2w3y6gey26v2yqakmvecesxoxfko76yisqbjxk46vuwygj4\",\"description\":\"Family Gathering\",\"duration\":307,\"genre\":\"Rock\",\"mood\":\"Other\",\"orig_file_cid\":\"baeaaaiqsedofjmd7nqyjlte2c34d3iqap6lcrxn4upg3cwqdmkio3h6hme4ru\",\"orig_filename\":\"08-family-gathering.mp3\",\"owner_id\":850116073,\"tags\":\"brevos,happy-smoker\",\"title\":\"Family Gathering\",\"track_cid\":\"baeaaaiqsec7r5jfwrqegnvxes7xowjqgfxzc7udsliy5u55xj765juga2wvzm\"}}",
    "nonce": "1792425174198493599",
    "signature": "0x811e61a5c2b65a415c1308c1717f53791659a57f1057be6feee0e31557957f3b5e2854954db269faf0254dfa06cc1c8dcf9f9448bddf1192a418856b70ef95061c",
    "signer": "0x7d853670b15a2150BFfd80b516C26EEd400f695a",
    "userId": "850116073"
  }
}