{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140302",
    "entityType": "User",
    "nonce": "0x15dc7a908037e77c6487236166c4bf6eeaf43d41ed3aa5299fb023cee26407be",
    "signature": "0x13a6066e6a2e4033cc5939ab27eff7df54276c0a6112be84a158800dfd11595078c09d50713dcb28945fc6eb58a3d79fb28f0c3e06911b49c24efc873a13380d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}