{
  "manageEntity": {
    "action": "Update",
    "entityId": "299763965",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3434980c4cdc63af45d45781cde42e924f82d76f3ea6a3f36f08e8df921633b9",
    "signature": "0x820df1800b83507280ff7c7bb0a83def030807f466f11ee1e8283f41fe3acdfd3c4a7e49eda8ab7d192dd9d5b011ddc5c2be706514c13675171b50081db63a1d1b",
    "signer": "0x13beEFd81c5fb2b0f94D5834E3811b3DB84B189e",
    "userId": "299763965"
  }
}