{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf91b5b20dcc313ad6a27cbc50822173041f074f4c09e162c167ede478c269120",
    "signature": "0x723fb7bc2de2a84f164c2d56dedc76b588f7bf223e99a39310880f85321dfa70539a4853cdc0407a16bea929fbf40088175990a46df95b149f061f4a328b9fe81c",
    "signer": "0x694e30450c1b0693cc7FB530Bce95f6B6193D366",
    "userId": "427045309"
  }
}