Hoping someone can help me with a JOLT spec.   I have the following json: { "schemaVersion": "3.2", "uniqueIdentifier": "ri.nzRNR5a3ad1AzOkv_2FU9WN6Z_2FluxpEl4eXjgUnYpgkvk_3D", "entityType": "CAR" }   and I need to use JOLT to transform to this:   { "_id": "ri.nzRNR5a3ad1AzOkv_2FU9WN6Z_2FluxpEl4eXjgUnYpgkvk_3D", "schemaVersion": "3.2", "uniqueIdentifier": "ri.nzRNR5a3ad1AzOkv_2FU9WN6Z_2FluxpEl4eXjgUnYpgkvk_3D", "entityType": "CAR" }   I cannot figure out the correct spec.   Thanks! ... View more