{
  "manageEntity": {
    "action": "Update",
    "entityId": "493852419",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x09c00b290bd3b3c9e5d7435022b35dbdf454475f46aac51ca880694070529b23",
    "signature": "0xfac0628d760cf2c7723cd5b8152139d246a496643527915b347620183c2e1271688a5ff857fafe3e55ce150e307bd92ee714d42eda414b5b967aecb77922c88d1b",
    "signer": "0x7f1944267b0245a4F1996Fcda10640aaD82a9974",
    "userId": "493852419"
  }
}