{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5dd3f2adcd0096f72abad7fc7dd73d7ab6f52d26a1e70db3fa65d399aac9027",
    "signature": "0x91f70c722740c5ca2fa1b382d74bb31737d27e38ed5063f4f37941f85d55f4244d521918260d48b9a459718554c642cc9cd0fb7f5dc95aa065817aab2d3317841c",
    "signer": "0xb8CB2Cc2649E307376d816E8c0a3eb9377f09938",
    "userId": "279965022"
  }
}