{
  "manageEntity": {
    "action": "Save",
    "entityId": "860579788",
    "entityType": "Track",
    "nonce": "0x73997c4e2a975a497c1ad1a82df32a144fbd09f5192add8247d6e36944e1b950",
    "signature": "0x8cd3761810d01c65a777146bef1ae34076a6371a7a3f74cd397416d029436dda4d722690a83e48aa91ceb0058d7e139f106586496eb8792c8f98ac3cd15a5e821b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}