{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "538529159",
    "entityType": "User",
    "nonce": "0x8d18caa423672a1fb2190775391ccd12dbcc6171eb748f7f1030db49d16fb675",
    "signature": "0xca83a6ddf70ae55c29484108769c280cc930ae42c138c3a398c329f104bd3daa101bf811dc5f1b68d782f049577d5b759c43b1d3a21c362bd627af074f0c4f5c1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}