{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108340",
    "entityType": "User",
    "nonce": "0x877610bb4c9aff5abdef10f6d9372814dc29f9c4293ce3903b950e46e5f7456b",
    "signature": "0x86b35cb2404dea991be00862fb7fd345f476c213ae5cab99d558c6e274f111672a3e44dab16843eed72ad4102343cf050d80fa08467f7b0fc3b5c95597b3aca41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}