{
  "manageEntity": {
    "action": "Save",
    "entityId": "313445861",
    "entityType": "Track",
    "nonce": "0xc86a0b4cce947deb9bddbdc89f5b6b4e79ab2f2c77d3db8b8fd5e1c2a3f6f90b",
    "signature": "0xbd14e012f8777d2fdf484d75d6eadb01f7c84cfafeafb369b4b785791c0d37c1376a1d79e252205aa4458bac86ee5787bd492acf24468d3ea14a00b854c05bb41b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}