{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x288a1c924711b01cb4a90a59e727c6625f008e9c1f32afab0d06b53fdf28d79f",
    "signature": "0x051411497c0e1b928b41b899869a6386148ae4a720dbecd240230ba5eadc6bb40413a58ad738a4c76ef653259d69d90914cca1bf058b9be8413bdc3fc0156a3a1b",
    "signer": "0xa647BC26cC15901047978FC53995171C2E27e277",
    "userId": "451498209"
  }
}