{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "809803",
    "entityType": "User",
    "nonce": "0x21502486fd24408b70024fa20fb8a18cae8d776b84d0faa13f9e5849b84d044e",
    "signature": "0x52efe7f366a5152ff983fcb0e3ad597616e149f41c4857e329fbda100d7bcced46ed0f77bc3b407a346dd893b7f249b68adf98365fe0778fc058d2f3e00f7f111c",
    "signer": "0x28E33991512111134d5d0a41560151532083B312",
    "userId": "9962"
  }
}