[INFO ] cp_flat has an unrecognized metadata value foo={"bar":"foo"}
[INFO ] Using 'mvt' tile format from metadata table in file cp_flat
id: cp_flat
tile_info:
  format: mvt
  encoding: ''
layer_type: null
tilejson:
  tilejson: 3.0.0
  tiles: []
  vector_layers:
  - id: table_source
    fields:
      gid: int4
  bounds:
  - -2.0
  - -1.0
  - 142.84131509869133
  - 45.0
  name: table_source
  foo: '{"bar":"foo"}'
  format: mvt
  generator: martin-cp v0.10.1
json: {}