{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615483876",
    "entityType": "User",
    "nonce": "0x1d21a0c47484cb3f6ee43cfbf25138330b4a46270c08e003dac33bab2c78f30e",
    "signature": "0x642e356e584e297e5e531c1c238c7567896189475135e588ccfe340d6db11290347db17e0b4bbe6e7dc6c7d8090b9cba9093f18e65bf4016969c3d00c4c10b4c1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}