{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbb3a94adda2a56c428763dc55066ba8d37faccc79ea3943ec0e9fc8f86bec943",
    "signature": "0x248ba1673903292c95d984976cb8003ab01320b7b4f4b63585e4de2e7118a4706effeb81990388aa0bd2a2911d39d80e2be4e025791af37e1ff102dd5c8073571b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}