{
  "manageEntity": {
    "action": "Update",
    "entityId": "648743045",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralpyvha73t4by3ic457lkglhd23tp3i3bvesaw4ntc4kdaegpvxyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1862648089}]}}}",
    "nonce": "0x68250d9e9bf79d8ad245a65f54d3aed7b770879335fd00bc74a746e52627bb7c",
    "signature": "0x446697468ad2ca1009b6f483285427ac06b3633219478773057ee505195274a91d5d791e8501b7579f04cf40737ce591e8274882839466a06edd228cdd2e3d501b",
    "signer": "0xCaE1ee7dc4DB493ceab857fd89C09fA305C4c5d4",
    "userId": "648743045"
  }
}