{
  "manageEntity": {
    "action": "Update",
    "entityId": "841833512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9e0f2de8851ea4d1e4d54c4a2e488b759399af7c44fded840b47eb6968415b63",
    "signature": "0x50302dae3243d611775d0bb193307e367e1f7fa1a1edf86824f26202154481720d8821c2d272df2d2c0416baacf44dacd05551ff1b52d68c764607defa14226f1c",
    "signer": "0x10F9eFF84cB30B2B7ed51c28ee2e13498e18e14E",
    "userId": "841833512"
  }
}