{
  "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": "0xc42b15ecdcc0c835a928ee88507407212336f84e28446487a6895e0c5feecd29",
    "signature": "0x4065b4dd8016931e182c9823aa3a0fd46cbf72e0654fa2f54da2d7ac0f5b62ab30ab37629ba25fd1746abb98e3448eb7ccc69bda3e9b27d546b0f82a0fbca20e1b",
    "signer": "0x1937D024384aA93c106591013814657C052cF268",
    "userId": "586538062"
  }
}