{
  "manageEntity": {
    "action": "Update",
    "entityId": "688584827",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x42ff2ba76a408a4f904825d1cb9011fb8ba23cc7ac1f0658b6454fad9e911ec1",
    "signature": "0x4be7689cf3f080a9fb09fbfa59bb79c53fc0d7023621a0302eab9323d48a76552316f1606cb5a98e455980778ba2cbef122a666361ab2970c720042bfeb2f57f1b",
    "signer": "0xf66b27cD76b476226B2b718d7892A1874aF76358",
    "userId": "688584827"
  }
}