{
  "manageEntity": {
    "action": "Update",
    "entityId": "663264551",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf3bd12178619a204e5e75ef37aa55cd0b41ecdb0165f9895605f371522445cfb",
    "signature": "0xfb6fd4af1e71338f48bb98b02554203817d9d003c5d0c2fcbcae15d90fc87d5f166a95e38c6faa5f2adfb2e94e328b01e9941ea680bb3f343281511ae76740ab1c",
    "signer": "0xeCAa5e2f11Ff4dDD97251Dd86224f36193d82eae",
    "userId": "663264551"
  }
}