{
  "manageEntity": {
    "action": "Update",
    "entityId": "2122221079",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"mndkxc z,x k\",\"playlist_name\":\"123\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsedqs3jg2x4wykg2td2bl2widpw3nqppwwhcom5x66xm335odt4fna\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x266d26952709d66f4c378624d8e41e250deabbcc3bef30a6ec044c1c2bd15d5e",
    "signature": "0x88c243e54e4b77646fb5b3f05c0dd130db373e6e8f5146106360442745cc6f2d661bd9da94279b70e96038c5201a2e8aec9f07e7500c2a9c1a9fd90128025c771c",
    "signer": "0x1937D024384aA93c106591013814657C052cF268",
    "userId": "586538062"
  }
}