{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302888",
    "entityType": "User",
    "nonce": "0x86c7a461f82c3041b453d9cc4281425ca2426832178051546d809a49913124a2",
    "signature": "0x9b00e71cade912105e1b2ba197dec85b343a603efb1d3db41535d57a2e4180b1363a729b588302581e4f0288444567e1f8e744f79bf32bc7cfebe09edeae63481c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}