{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280621119",
    "entityType": "User",
    "nonce": "0x12c7008ed95e57792b992b389bd08c0b71e26f6e3d0de7deeed3f5e0930c2a43",
    "signature": "0x449a8ba693e3c25eb1e386564b34100fb4a8c8e624a492fb7c5f8bf7f15f8660042644191d9963767fb3ee9159986976b7e18fcac76d4d342903792e4ff15c9e1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}