{
  "manageEntity": {
    "action": "Update",
    "entityId": "3636854",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralfp7iip7lxm36fzvagz3rkperxmmw5lza2tfeuphcr6jh326p3ga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1369700879},{\"type\":\"playlist\",\"playlist_id\":1136421125}]}}}",
    "nonce": "0xe4bd5eb4acfa38135357b91f513c41d48624136afd1b09dbddd905776df3df4f",
    "signature": "0x9bbf1da314f75e5200cf7caaebee3c6aed2bd8cc465ff05f75d81fdde2a903cd6c7ebe0c11460e026a67c126743f0aefd5afeb8dbf5ab60adbb24a13a44dba781b",
    "signer": "0x2e9d3CE541fF1290944eF388dE9759d77881dA4a",
    "userId": "3636854"
  }
}