{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1666731",
    "entityType": "User",
    "nonce": "0x660769a7e8b44540fa7616607a2887b670106d86d72ace4dec58a9c507653623",
    "signature": "0x69a25d8d4ed9af627ff3937982fd313b6908bfedb14259ff6840a92c034848a23b2c5ba9f9898aaee2688bbdb7ad8e83a20758c3483791ebe1e1c01f926763561c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}