{
  "manageEntity": {
    "action": "Update",
    "entityId": "669483561",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x921a80c11d0aaf2f013cef7ce8b9d096c0f4b71ced941bb2b6fd2fb4d0ddf48c",
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    "signer": "0xd3cA7B55fFc21a012A4F3fa07C2C8D79aA70edDf",
    "userId": "669483561"
  }
}