{
"manageEntity": {
"action": "Save",
"entityId": "2108037187",
"entityType": "Track",
"nonce": "0xba746a1feced0f6430bc52e54f58e2b987e4f2c4e841328afec24b49a1c59987",
"signature": "0xf9b48788c3de0daac033c4a148472dbf4f598327bbb2880f784394dfe79856be1bf9582e7bd9aedf8145a3f75bc819adc1f9088843a8ccb0330b94e6d4987a651c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}