{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x342f65578a6731caf71e0a38657b2b72dca44dcb4c460d61dc8edc864f922559",
    "signature": "0x7e4ed449b63aa905a2c59e6af15baaa4208804925436e6332d4443d983203a4941d0dc5b2886d3cda45cb6f955a3339d0a47b135c7e8a391575f59c23e0d076d1c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}