{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x5235e3801c3e7f89f43b7d9ca43686216037b41bba774dbdf0c914bcedaf0ab8",
    "signature": "0x40a81ff646a8ecd92882510c4b7d073f1611503412d62352b0208ed69b8d109067deee79434cb19d9e3f27d6a782a1ac0cf1925ff04a7e55e9e267dff53b68a61c",
    "signer": "0xE6B5777D1Cda6098756958CaF7bE04Bbfaa01F3E",
    "userId": "37158"
  }
}