{
  "manageEntity": {
    "action": "Save",
    "entityId": "67411167",
    "entityType": "Track",
    "nonce": "0xe5fc5ec39d5e74870d836fcf5570b78014cc3ea63ce7539fe120bcfb8f750987",
    "signature": "0x26c1295873a8ea98aa1992bb3d05f8659e15f4abc3ba5b8c30874b607e86495e0f5dd172674548c5ca8d4587a0652ddcc53ea51d9e6d97188e0f39f3fcb50d051b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}