{
  "manageEntity": {
    "action": "Update",
    "entityId": "993474417",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x34dc555591980c035935a5443fc6c916de56ffc29bc448581feafb3366746f5e",
    "signature": "0xd251744f59af6ea9cdf147a368c51e277b032b277a20e1f028f8d97d5e034f3d2edbf7429b18921d8e096a2900ec4c17b37eed30dc198de770864f4a3e625cd41b",
    "signer": "0x7bFDCeBB2A574F5402016eB2E8A4717193054897",
    "userId": "993474417"
  }
}