{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x6dbf4ca8b187dee4f458b85486e01deff843d823a132589e5e4907e48c1cdeb9",
    "signature": "0xeee6f52bc5e1afa96563b5cbddb7d7eb6d99e2c121b045206cbca97822cbd7cc161e4527f82ffb67b7f5bb04337316dc36669ce7e5f3c692d228397130fbac4e1c",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}