{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7cf2edd19b4b828385153d9f5753ee9695f50b8e88a58627623f7e8c30fdbf8a",
    "signature": "0xcc03e8a4c6c17611190d902f7b1f94263f02a07cc7ad0815841a7151a86dd2ac34c4477627e534246f1c02ec07f75db97effdbf677e0d595a6ce0687b5f80e7a1c",
    "signer": "0x4cC4772F137BeAC749Ff7491b50b11478bB53fa4",
    "userId": "330913332"
  }
}