{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe4eaf4e0b450a01d6195f6672b59f68be5f7fbe4536d0296158233a69322fa54",
    "signature": "0xe61d640b91bc7aa74a24fc447706198e85bbd78feed7e632d7057f8d177294b95a3387b5b5ea6694014a48bf138a4ecb45fd3f12332bcaf9358e95090aea4a221c",
    "signer": "0xd2d78f9b62b3956830b58248CcD3C59911Dd6E58",
    "userId": "846847743"
  }
}