{
  "manageEntity": {
    "action": "Save",
    "entityId": "24155001",
    "entityType": "Track",
    "nonce": "0xd4c9aae76986bf469778274c27546822614a22979c8e01075d8e6131a9a93731",
    "signature": "0x1bf40e7ef358d75ee9e3a2f88ba8ab281c52258edf4a9b952082f2f18a90a1a40a576e4b2e763959750643541e5e2f0da75033c78ad8fabb205fbe513ec75e5b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}