{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "602835811",
    "entityType": "User",
    "nonce": "0xa9024d74153c936a210d6f8cf23ff7f7ea7af0bd3267c0210aa9e54336ee628c",
    "signature": "0x0ad95216b01c584230994332132577cb4f9cb3d346c23a190fb1c0adb9baf25a407ac3b38e6bd7ee292df25bbc11a48969072a0714d6972a93c4fd87f0ae48761c",
    "signer": "0xb15e0969937058c681E67343137f40F72F50d99F",
    "userId": "790717795"
  }
}