{
"manageEntity": {
"action": "Save",
"entityId": "995459266",
"entityType": "Track",
"nonce": "0x74490e60182c787b8e892beedb53d3247a0d640eb0ac3de7c3a449e3f1b341f6",
"signature": "0x9bffbd7e80524ceae99d4138d08a434c8ef3997d4947e87e926f74fd872177894d0faacde494192bae1e05214a9d63921c14edb5a1963617fcaf8e871001a4e51c",
"signer": "0xf8B02289D2776b4B0D5Cc87415be8F09D2212Bbb",
"userId": "804650248"
}
}