Function provwasm_std::add_json_attribute

pub fn add_json_attribute<T: Serialize + ?Sized>(
    address: HumanAddr, 
    name: String, 
    data: &T
) -> StdResult<CosmosMsg<ProvenanceMsg>>

Create a message that will add a JSON attribute to an account. Serializable types can be passed into this function, but it's up to the user to handle StdResult error case.