{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307",
    "entityType": "User",
    "nonce": "0xa093b00a124b8e8d8477e8739504c37f3cc7245d6b0425a71a501bdddb80ada5",
    "signature": "0x417f894ec73115bcde12c3874edc1494e20bb9d303e50623bdcc878b3e3d6f2f56c6937c15e2bfa18be12e01b3fb6e62e7b0f10f41e801e175daa6afd3a1e90c1b",
    "signer": "0xaE442B4b9cdfcA9A4Fe4475E356bc0540E0567Ce",
    "userId": "568957"
  }
}