{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91cec03b6bd3665160f7c51ad8816484fb70333c295b00b9f5c28fe264f4f893",
    "signature": "0x840f908289adf5b3efaadb3077f2dcb768bad1fbd87ac22da0eb260e1ca495a016c43c53c6d508ed68588cffbfcb87d1b0524d1c2a20ba09f1c21071e1bcb9561c",
    "signer": "0xfc7064Ac6bb1bFe42B00EEE14298d29bEC53611F",
    "userId": "303606320"
  }
}