{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30263",
    "entityType": "User",
    "nonce": "0x21932786a7eb77cd37010d0d9c79e53b016ab645546fa187ad1689eccf9181dd",
    "signature": "0x0b89b078982e1906518d79869c776d0071d530855f52ad83e1222d68287a3f7e2c124be15662d0092f3e4afb35ff71817751ad821e0c12d775e7f0962faa00a21b",
    "signer": "0x0DA81955e67310452357074d6ee39703c163B4B3",
    "userId": "122499259"
  }
}