{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x170a5d421028f805ec1bb5b354b4ef39eb157055fa8c9145c81c02439fe29ff9",
    "signature": "0xa8371e7550829383968744cf0c474b8cf61b4fdf4ce9a8c59cf833ab9ba312cf53ec585f4c12ea154736c0be1edf1eb504111d4ebfa391a5901e0995ba3776ff1c",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}