{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40887c4a6aa65e78d1d5e93e4697f9591b25ebae62aa47eab8c566128f92cc7f",
    "signature": "0x226abc1ec07eea4707ad510d4bec9bd9169205a8c272be8ddad1e3ec78a1d2d57f6aec8194905381f3c7a34b382cc3ab0a94b62422023902e3ebace25e5e43fc1c",
    "signer": "0xf40B9733C01391cEa83c60E54EBcAA3CEADE6019",
    "userId": "169185377"
  }
}