{
  "manageEntity": {
    "action": "Update",
    "entityId": "313868833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdcdb575d0e44152f021057213de14bdc119856a893167f564ae28cd9a8ec3d7f",
    "signature": "0xefa594752f1f06c5e9aa031882b75f1baf9ccf19033b0208c813f416cc43b65d194a709395e97e243835c30328294a357300b34dc8de9d11192834e9a0a58e181c",
    "signer": "0x2A55cAF879036C4D1970c491e42a869C1f124D37",
    "userId": "313868833"
  }
}