{
  "manageEntity": {
    "action": "Save",
    "entityId": "105328",
    "entityType": "Track",
    "nonce": "0x04c5b070e55ffb631352d8fc0721821030a98ba5aaf93fbb1fce690337d7138b",
    "signature": "0x2b8e58812ad248dd36319ab3686cfc48da2ed7d5e883ca0c81978586b6e3af080b0d6ffd21fffbc8d7cf1f691a0e935275c267359c059b256516653b9d239ecd1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}