{
  "manageEntity": {
    "action": "Update",
    "entityId": "991822518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeb530d65c7a72a2a13c293a0ddf2f97bcba68eaf662e597ac9395ce5ea4dbf1c",
    "signature": "0x89ffb9d058a96c174d0c0191c366cb400b5b4bdcbea555d489987ddf2ba69b973d691009386ae33756699f159ae55bc2480d7ac1adcf162b98c5ab43b0bab4631b",
    "signer": "0x561246FD13383982AD9e3a97F8D3bec81f63769d",
    "userId": "991822518"
  }
}