{
  "manageEntity": {
    "action": "Update",
    "entityId": "514432550",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x642ada5ff52d60ea91050d9c9cdcca5937ef5a8630dcc006b456ba612f83fce1",
    "signature": "0x024fcf6a6bebadbd9feb37cf9ab5407e767e730eee94589f70054fbb9604008669ac99586f58b8e26578bedec448a9231981a9458107e1d6ceda520cacd8a1fb1b",
    "signer": "0x17704566824E1Ebfb75B8e1daEc5E793E35f49DC",
    "userId": "514432550"
  }
}