{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x03c0b2cd98e191b919557c2e30cada594bcc514ddfee8899a7fe118d86258429",
    "signature": "0x7baf5540a158bfa7be32f41cbccf8ca1049f92a2c7123187ee90c587bb3c9e273bd37a4472f8fdaab2b5b340c4842b8e20aca78f740fc2723f20d2c3710737311b",
    "signer": "0x881DC02014d371dB5F53a35eB20019b0253C7d40",
    "userId": "637221900"
  }
}