{
"manageEntity": {
"action": "Save",
"entityId": "978440985",
"entityType": "Track",
"nonce": "0xea82ae129906740c28adb4930db1931b89cf7c7ed5d23987a20cf7a4cb5e3691",
"signature": "0x34165d295446876c1c77e37afde3e9fde17137955cf8555e2c48906185edc4966aba1c440f09b19dd9d3ca6398a4bff79f6274b7e819a65e69f79c52a5b5846d1c",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}