{
  "manageEntity": {
    "action": "Create",
    "entityId": "969244161",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"data\":{\"title\":\"F\u0026F Demo\",\"genre\":\"Electronic\",\"track_cid\":\"baeaaaiqsebqmwd5ug52xnsolktatonjqj2y2kusjlyxz4cupwheadscqy7ehi\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"duration\":192,\"orig_file_cid\":\"baeaaaiqseco6dcoxf667x27siivwvo2djimgrrxzunrh4imdyl7jji5zwrczy\",\"orig_filename\":\"F\u0026F Demo.mp3\",\"owner_id\":168481369}}",
    "nonce": "0xe4a6c95b50112741207754ac2a49b27b493c9be78b6b897f2e6756c3e842c8c5",
    "signature": "0x92b336ed89b108bac08fc5b248781a8ac44bc1fb7f331e379cf94267d79fe3707d1e12de2556fdfa13ab2e856203ace2afe3f726396df3d9dba34ef58ab0620b1b",
    "signer": "0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5",
    "userId": "168481369"
  }
}