{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121199",
    "entityType": "User",
    "nonce": "0xd007c431a37e29148a20b7d44c48c4017aa2585bb548141858c3b58ba5994b53",
    "signature": "0x7af1d49b08869ddd8eb9d5887d6af7bed6e7d4a0ce7f82a55e0e34331f78af0919318e4386506ef9e0fc9dd8cc1fc485b2efe2a89eb1bb6a3fabc0b06c9c0e6d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}