{
  "manageEntity": {
    "action": "Update",
    "entityId": "720807656",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd6f886a6dc76075aaa9ad6e40277f6ab85d53a20210aabe78031e16ee80125ab",
    "signature": "0x2ad16b23c55a938f02290e48799c57d639bc229a44657c996cd06fca292ffeb73604aa4d07fe463473c55eb1abb0d95657bddf1c663840b7bbd9376b51e03cd91c",
    "signer": "0x0F14847C13192e78c728A5b359989b0870512CFE",
    "userId": "720807656"
  }
}