{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008976",
    "entityType": "Track",
    "nonce": "0xdb013a88a6aa2457ad0d8b72d6ed79d5a907f97288309737b0bc8fcf774653ad",
    "signature": "0xd2781bc02cbdf08465dc09ec8c081d73ac17a1ae46af4050d49a72c4e57580ea2a78aa18075d6bfd44740ad36893433a549d882ef3728503577a0bbc48698aca1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}