{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c2331d071d39c29d9890a4e8f3e586f1fd5dc34f23fbb38d092ce7f19b7f3ee",
    "signature": "0xcb65452728c7181a2772ed1c8ea5b51e6e8c0737b0194c38d4b2a66307524ceb72830d9e42e9878942efafdd1e15414c5caf139a808b5d2f120d86947ca19cb81b",
    "signer": "0xC1729196a1613f763F0F25c74d16CE643FaCe0f6",
    "userId": "194195649"
  }
}