{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "817864519",
    "entityType": "User",
    "nonce": "0x5a7365883d00f11650ddbab55074d55b33aa03b00d84626373687892aabfd8dc",
    "signature": "0x986a512f4152fb53b28d42ebf784776b17ccaf4bb858a355e3a486e5a0c14e3e2771246f043af07c591559798a77e8b1fadeada86665339deb0a1bdb85c249621b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}