Added db mapping to user model
Added db mapping to user model

Signed-off-by: Paolo Ibarra <0c6f42b4e4fc359b13f72a0c55d928e96c8bc5e7@gmail.com>

jpibarra1130/simple-api-go,jpibarra1130/simple-api-go,jpibarra1130/simple-api-go,jpibarra1130/simple-api-go