{
  "manageEntity": {
    "action": "Update",
    "entityId": "513323235",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc0c2ed58c4941a79f15fc79eca096ebdfb7c0b679ea17cbb61e79f28cb5e6b75",
    "signature": "0x83a02cd3b7400f267e1326926146b559f876a833a27e291ebe263b2e82356c6c5aca8fba05b5e721d399624020b11c9a2dd71e96dc4e26f0054895d08b4f2c691c",
    "signer": "0x1F7AD5e639e74f62C577d6ee9140C839b0100481",
    "userId": "513323235"
  }
}