{
  "manageEntity": {
    "action": "Update",
    "entityId": "338722377",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb89c6e83091d0eff4c1e851c93f977c6a5ea5b43a32db3a480cecc4142049afe",
    "signature": "0x88074955f917c9622373df7abe3ba1a5aad11307ddf239bf13e82ae835b4f20267466cfcd61fc8f60db7c9a3727d6ef7e15cb590a0fe78cec0f863d80e9ac1b21c",
    "signer": "0xaeE4deb8459251684C1F9a302d1bD0699C791E25",
    "userId": "338722377"
  }
}