{
  "manageEntity": {
    "action": "Update",
    "entityId": "886304090",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf4350db4e03a95e65bcc9906ba96169da815c620a468bb9c8b13fa91415281f1",
    "signature": "0xa597ea10315e407f91796178b7ed91b6e380d343d09d80cf0784615c294714ca2f59c88ea9b845f329b341e8945811aa553a89578870e3a802dec9bc5b91d2031c",
    "signer": "0x0331a93703Fa8bc02EB89B46Fb13a9840a597d03",
    "userId": "886304090"
  }
}