{
  "manageEntity": {
    "action": "Update",
    "entityId": "174356111",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8720a14f45d5198cb4938105f70c0175939a7a0661c984aa6e9139c095c28283",
    "signature": "0xdb592491b7cb164d0b34fcff1543ec0a1508f3e4dc2a168bd675e1ce58dd41b831d77cb7887b4162d4c0818045f0a93d318e07cd5884366b03060b04a6331a131c",
    "signer": "0x3efCd9190037D66be28b556a91aBE8B324B94CD3",
    "userId": "174356111"
  }
}