{
  "manageEntity": {
    "action": "Update",
    "entityId": "990308344",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranq2asc2scia2hzckdyqjgo2d25gdd7s4gjozplo5gi4gyrpul5qa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":89444611},{\"type\":\"playlist\",\"playlist_id\":1409111351},{\"type\":\"playlist\",\"playlist_id\":114523}]}}}",
    "nonce": "0x70b9a8cd1dd97cd74d91348cf73ac81853f8cd54d36020336a1b7e79b7792aff",
    "signature": "0xb6559bb316956614940aa902edf8177f6a5ecded658f6bcba7e4c2ef077b703715c1e5d923258bae673ab120cfe4edf73d3c774d6e6a5157a362a1d40c0cf54d1b",
    "signer": "0xb23FFd6D016E95A4022Fbe25C4a1179AF8492788",
    "userId": "990308344"
  }
}