{
  "manageEntity": {
    "action": "Update",
    "entityId": "250948390",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe0bc1efa7ed337ae042bb02cd60f0e1332b30ad451b587c7bdf71101e0b9d779",
    "signature": "0xda97cdd26c8c151d52c1fa7922bfbe8ae64667573ddaa059ee7560a977bca70071fa56518b7adc8ba0ee095ea3d2c3347cf2f800dc169b1544a5adb4f476400a1c",
    "signer": "0xb3915075D765e7921f232D6EF6C0Cd186Fb141a2",
    "userId": "250948390"
  }
}