A funding source represents a bank account from which funds are drawn for authorizations. Endpoints
MethodUrl
POST/fundingsources
GET/fundingsources
GET/fundingsources/:id
PUT/fundingsources/:id
Funding Source Object 
{
    "_id": "61d4150b01c6cdd1184ef459",
    "business": "61d4150b1dc7cdd1184ef455",
    "type": "default",
    "status": "active",
    "jitGateway": null,
    "isDefault": true,
}