{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211545",
    "entityType": "User",
    "nonce": "0x5947f03db1a9435b10f6b73c15de59340025f71b14c210c0c143de417ecc3c1b",
    "signature": "0x71723b42f6a97476d2fa87276ce3fe5f9132be79d1d3589ef1ae3b046018e557484761e0fa6e835892ae09253ac9c432d6c6f1f08f1742c4851c1719ee502b831c",
    "signer": "0x866CB73184a8420C302e3850B610761F882C4DDE",
    "userId": "166428182"
  }
}