{
  "manageEntity": {
    "action": "Update",
    "entityId": "457719352",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradt7ya4afkfwpso3vvnniunodyxpp467nc5g7tx5diehwap3xjvhq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1371825632}]}}}",
    "nonce": "0x7fc31909d426efaa40dc24a15befdbaf48830677503277aba7b6c549af41c68a",
    "signature": "0x6213807e8a0b201ab31e080f5cd83e5c208ba069359ddc6871e97c4201ec5f8718e4f3bd417ca3ccb7d85cba622f4b4270e2c9fb729ba4eadf7f9b183bbff4e71c",
    "signer": "0xeaaDaeA3d82533Ad0D1BF4B88fd03EdE01320868",
    "userId": "457719352"
  }
}