{
  "manageEntity": {
    "action": "Update",
    "entityId": "51270411",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x579c84383ee98d65e6f505b8fcdd6919b553d0bb498d09b917bb986bd2b704e0",
    "signature": "0x1c3dddf70f3d6d0c4410a9d12c2105ea196304619bdd8808db684270b6dd6431150c68d006a33696ca771f6241e9dcf6c7500b0394cdca57e657da62370411591c",
    "signer": "0x1F5b327b06F23985a2eB7AcDEE087c4CE3F79860",
    "userId": "51270411"
  }
}