{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449938034",
    "entityType": "User",
    "nonce": "0x490c78a21266f57ce80815692c454082d1a1bbe853b0e038febf6936c151c205",
    "signature": "0x3eff26198b49794dbd70faabcbd1a5922bcbfa13ceb85a4b197af569f678c75a3646c743b76387178a530eb52c3cff548bae470dca02b5b88af859801b7036af1b",
    "signer": "0xD1B4C6CB17c1c0Ff9096EeAE4B3a71AD6821764E",
    "userId": "410198578"
  }
}