{
"manageEntity": {
"action": "Save",
"entityId": "1022908479",
"entityType": "Track",
"nonce": "0xbd16aeb616903999b3ee9e69bc8ef83108d1553bece2a86b2e2645ade138e58e",
"signature": "0x7b9a0ec54e2f18867f00f975822d295956857d90a1871892962f3e565d36c93e22c12a0d73c737200106590e5844b4baa8a21751cb4eb12b3a941d9df46380ff1b",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}