{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026668268",
    "entityType": "Track",
    "nonce": "0x4a85d6dffa027368be477c8e31e8cb051d7c41272fd0dd6f5e1512c5470eacdc",
    "signature": "0x3d8c8c9dff4801d3997194683984853559fe40fc2e561f4d445ec2ad214b70722675c4dabce068e1bf889a22c1a345f395ea3ff67780cdd22d1c530af60a8d4d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}