{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7d92d91778cc24a941722d3d4b6432966843642feeb1eea79ba25b1b7e49d5f4",
    "signature": "0x54e941a093965d3e4f68d4c9ba920bbecc4ce2dedf42e00452bc8db4bf35b19f56ca24eeb7574b2a113a9d40757025cc48870017dedae43f37dcc856c52319e61b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}