{
  "manageEntity": {
    "action": "Save",
    "entityId": "2061856200",
    "entityType": "Track",
    "nonce": "0x9780fe16116cf4f54fc9d89ba1365590e4de3e9556a2e3e83dded815b203a2c4",
    "signature": "0x0906ca1de7f1d5259ef36003fef9f2368c8c61fc4b8eef763d9c431cf1192a7d15e1ee19ea8922598bf8b7804e22e3c7cf0c051e7d73fd175a6e16b036cbafec1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}