{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951995708",
    "entityType": "User",
    "nonce": "0x607c00f675a4e85766acd1cbaeeea1a5a04db8059c052f1e24000704358a02f2",
    "signature": "0xdda7d6a6cf090c87818019bcc3c4ad537c0ae57253c7daf6840aa20810c29bd96e25e929664b3cec2c5ecf04684c545d5e61955d45b91abf704625753b25a64e1c",
    "signer": "0xC5CAB16A354F0c1B4f966af7A367647496c29591",
    "userId": "508709945"
  }
}