{
  "manageEntity": {
    "action": "Update",
    "entityId": "940918757",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaf9c2bd1f61bbdf3155706039fde5c4f6272205e5f5b8b6c8bfb3fea5e370d10",
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    "signer": "0xA91667de3F476Db11A2aD83D6f6671b89BC17733",
    "userId": "940918757"
  }
}