{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "916501666",
    "entityType": "User",
    "nonce": "0x6643ff6d6c85ed85205a297aeb90069596256013aa8ae6aca8e617e0470ec7fb",
    "signature": "0x2c243115b7aab48a7e56c27624182597aa23105cf187885ca9be1d3b4b80d0bc5b706e04ade3af10df51ff573ef72d6a61363e025446b674e04a950bad4b2dca1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}