{
"manageEntity": {
"action": "Save",
"entityId": "1911618006",
"entityType": "Track",
"nonce": "0xe658aef740b2d4311eab8ffb64180e962ad30f1378a0592294c7546759f7f28d",
"signature": "0xcc4e6d4983eeea4d92b28a0a2a2b1aeac8db16b72a7bf95888a78ea2f741d0aa202bd74e836378ec34d0c1a0fe42ca4e16ed569cf084783fc2eea1d918a558d81b",
"signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
"userId": "887547386"
}
}