{
"manageEntity": {
"action": "Save",
"entityId": "1259970119",
"entityType": "Track",
"nonce": "0x61c344f4f0cea50481671d1a0c3607552831af0d2e304efa67e4be36fdb45b94",
"signature": "0x6dd3b6fa6601a1ec67bfce8ff6afb89684e6fd5e43b8af388326cadc0b338ced57c99da3aec4cbf3f3b9a4016c4c1b149dc2998751e7e6660d3d5d84fb83bb701b",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}