{
  "manageEntity": {
    "action": "Save",
    "entityId": "235441396",
    "entityType": "Track",
    "nonce": "0x0fb7c8f55506ffd170ab53c160d719b4fe7f0e0dd8b0fc281f9439aaebe93497",
    "signature": "0x26b56f250c7a0e8c5cc370bfe36d5c843f3e34a5cb1c6b234ff166738803d7cd27606ce5ff11d70d97b4dc6e1bd820f9a9bfea13727fe361d9e2799019ab55941b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}