{
  "manageEntity": {
    "action": "Update",
    "entityId": "291544059",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa86067596169da1c1ac30a9c81d433985ef968d1369923885c69f8fbf90cf230",
    "signature": "0x1a458994c34767d575a5d661a4fbbeb7bed3fe1a384685ea458d03bb2a3358e03fb1a149a499834140ed67bc5349e10e07507f063bc728a5dfde7cb3ec2f1b6e1c",
    "signer": "0xC016cb425E30382D5EE0FC1A4dD9A977f836a2c1",
    "userId": "291544059"
  }
}