{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "544965867",
    "entityType": "User",
    "nonce": "0xbc1599011c8a6cba2b1fae51a78af17b2edab33d550293c2bfac8581e1d03f6c",
    "signature": "0xb41cbf6018c4a53780353b21b49723f212703d590ade1b40acff22a8696e8caa29da4a2f75dfeb20d5816cdefbc5141dacbe7704c2e86e749f5c0d78959165ef1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}