{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "644189",
    "entityType": "User",
    "nonce": "0x1a6b546908370e9489fc4fa99bde4a1faa9993f6de0056e72f754d9fba6556a3",
    "signature": "0x263fd52a0ccc481b00d4232f104e35d4b221803bc72cee4e5384491550c942f86f54d35f8819b4b17c5cc37dd3ca9d285a827b14bceee34ad22f352f03978f081b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}