{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9fc9431dc8546bfa5f10900958f176b3ad6229e210d4a6ed72e9804c3ec87ba8",
    "signature": "0x76a85c1c0fcca87991affd54e14520b3429ce5f833d3a0630572f378e8f66be43d2566fa2ba720dcde2e355572c01b7572a034f27d3b8d93413c9d672c96fc611c",
    "signer": "0xC514BF8450eC76F3643255F49FD795ce37847921",
    "userId": "638036736"
  }
}