{
  "manageEntity": {
    "action": "Update",
    "entityId": "380392693",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb10d1956466d3025e45fada8bab45c0121c1eedf3b29e17921d84a8c9b929905",
    "signature": "0x6461d8f2f6c751390a7f911f0ced2beee7bb87941c1282b23836170ae2d9dd7f70fa722451531971f2c43d1025678c4fab6faddc6671a8c3419282b7b70ad2791c",
    "signer": "0xA5f664C48C39375c18a869050a07cEbfce57AAc0",
    "userId": "380392693"
  }
}