{
  "manageEntity": {
    "action": "Save",
    "entityId": "125677283",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8417b4e913840e4144fe58566c1f3c96700bfd37fb11fc035594771c7bf40847",
    "signature": "0x87976dad2036a513793c279d1667ffdc2375af69eed956fe8397d80588dd79a53f7c3d4d7e29dde8759d420d18591793cfa076741c87b2eea6fbbe0e07ec87c01b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}