{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280440301",
    "entityType": "User",
    "nonce": "0x9d518958e303915d1fd8a5f3e2730d4d9f603f3763f0a704b454179a34ea5199",
    "signature": "0x1a1c707180d327e06eb9b54c36fc57b0fdf86aabd53b6df9991a896e4f795ade4c111d66011c16a44bd864aa49468cfbd426fe0b94b2b435ccf00721760794da1b",
    "signer": "0x3d3C9a78785e201CD119b8f74d7d88D131bB3cb9",
    "userId": "350266629"
  }
}