{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357831382",
    "entityType": "User",
    "nonce": "0xdb7d590916d7392f625025ac7dd08b8c2f2f2e41b508e4afe62cc084fc1f90de",
    "signature": "0x48b7fb21da29c0dcaac66ee8e30739a8d8308e325c043e278f5796b6e30e136c749d889391588c24e6e49e3f6131f3e137502b65290494844f2ca3d1f172d1d71b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}