{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0x0c369b2a8005cd78b6a32ef8ba5e160e48fd64d4b92b467f6335267db16550c6",
    "signature": "0xaa8990c8716e081b5c92f3de8d52f48843cd4020d811a58c87ed6b67bcf4e8c8687e99fbb0980dcabd5ed68437786fbbe5fa93d8f2071c448aeed02a1e8a252c1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}