{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326584",
    "entityType": "User",
    "nonce": "0x52a971adc056590c15f1d81a6905b2cfddebd4e871303f828b82737738877f5f",
    "signature": "0xedcc8950f9c11a5bd9604fd74aadb4be831cc2acfe30b91f3f8eb2d6c32690f313fe1c2a4553c120e681046e792cb8b09034cbcec7dafbdce493f754f9d452fd1c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}