{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x78931d2f7c288b96506617ff881442f3993e84b9cdad530fe1729fd8020b2445",
    "signature": "0x2353dda0315572c92d4c64ae5a42bc85e50afdd1678ea044cb406008c66c713f5ad060ba50f77593e3668e238a595069d59a34e1b851878280c11f4dd0de75dd1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}