Every request you make to moibit requires the auth token to be sent in headers along with request params.
nonce: some random string(message) which is going to be signed with Private Key of the Developer.
signature: the signature digest returned after signing the nonce.
developerKey: the public ID/Address of the developer.
Sample MoiBit Auth Token
Just in-case you want to check how your Authentication Token would look like visit your moibit profile.