{
  "manageEntity": {
    "action": "Save",
    "entityId": "1936085185",
    "entityType": "Track",
    "nonce": "0x7d3cb5fd42950538e3428a1cbbecd167917323d07ac4300ab0045003ab30e6cf",
    "signature": "0xd653fa6b3a44181046d47c125d895e75a55b97f09d6331f50c8b9d0fdf7975c0280bc24d5d0e3c9a464f680eb0285a00ba68ddd4eccb4198cad919f6d70304d71c",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}