{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55640",
    "entityType": "User",
    "nonce": "0x83ebcfdca83997d54dbe883f59509de05647f514cedf0644ede314045f1a38e2",
    "signature": "0x2e9b82cef8adeb610ab03f8f116753fd1f8eba03d09344700c45f632a2a8d1ae62b8e6988f19d2aad163e3a66b9670b1c7fc8884f179f9d09d510bab487f173b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}