{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ac443345dae7053b028e0ba53832f8e4a3df0bf9374bd0b406de3fa9d0737f3",
    "signature": "0xcb09dcb706355e1c913ef7ce1af101ef13b0728684f73d781ef2f3802f0048805f8529f500379b4eac8c6961b381c1b5c1c7a6074bc28ac35d2a3220d552924d1c",
    "signer": "0xd3776dAC5E807D17D3cBFB28F2e8Fbdb42Fd9e11",
    "userId": "607458690"
  }
}