{
  "manageEntity": {
    "action": "Update",
    "entityId": "502360552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x864c1e6e86a1ee3a70ab459d2d6085c2103b1ad6168360ebebb3d1f0332f9562",
    "signature": "0x1326f7ffd188239ab4bc0992d062de773146f962185dce3ad6f66a1099e5fef52184be3ae99376baa09980f9db4653f7acb6525b6a3fbef7bc6d841c04a07dc51b",
    "signer": "0xbEe654d13cdCb3776c9bFBC6c4641F8b75Ff9f50",
    "userId": "502360552"
  }
}