{
  "manageEntity": {
    "action": "Create",
    "entityId": "875354581",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":875354581,\"description\":\"\",\"playlist_name\":\"BGM Sample for ROHTO\",\"is_private\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x3278656c01ab353d12247e021d9f2212badaf08dd8f6d254844e3615ae3cc3ac",
    "signature": "0x44397226c88065417973e6e3dfbf83e767ca0093d1540eb4d71eaa963e4aecb034e3aefb076c73397d183d91773b0bffb1ca0f0253e1f97da4c08c6172989ee91b",
    "signer": "0x5877F7e1aB261CEa57f1734519117Ed49d50c8c3",
    "userId": "549983695"
  }
}