{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xca959c50c15ff379951ab3437011e5408e07d1668f4bff603d1e42b3642995f0",
    "signature": "0xbade870badbd0bf490119bf984f36a852e6c3a937ae04bd83f0980c36a58b32132dce87039ca3492185321fd5bcc55fad1571b1bd4724f7eb821e762fc0d235e1b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}