{
  "manageEntity": {
    "action": "Save",
    "entityId": "86463619",
    "entityType": "Track",
    "nonce": "0x8c41e65e450627817be60085b86e8de717b411bafa13f3c91df78b5dccf18c2d",
    "signature": "0xe80f1c59fab8e77316f9c6b868df38369d3a7d304f82cf9d70d88844dcb9fa2d34a821714959fd3f4011bf2af6deedd98cfe8f291da72d9441eb75778d8853c11c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}