{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a9351f4a8503c683b0c5500522e6341688e97c0e72d187a1baf2e98f53d5317",
    "signature": "0x3901588d9c289b7f46cd5de9b16e441fff18015fde67c33a39f08398793425832a446665d434e23e756f7a7209142b56eb2b23424b23cce13539820831ccf8531c",
    "signer": "0xA4cCa4BD1bC397f89bB799Cf867FDe2e7f025B6a",
    "userId": "880666384"
  }
}