{
  "manageEntity": {
    "action": "Update",
    "entityId": "854828390",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f29512085fa2dde579048abb706dc771e74b1089ef10a1a0fcda2a430390362",
    "signature": "0xbe1eff140d29d06ce6b6a3bd539f917802ff05296029c6ea54f86578f33a72192d688ff0ff86c84c8e9209888fb83c51e5db9257e9c8256a8ad4085501a77b751b",
    "signer": "0xa8BEF74bDb7cdBA1D7E949228F5112f6af3276b9",
    "userId": "854828390"
  }
}