{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1910",
    "entityType": "User",
    "nonce": "0xf80e0886ddc4a06119d35d35594b4a08880ec694ff468f603a81df95ac9ecd9d",
    "signature": "0x85c312e839fc049ea469758f8c69f06ec3d69b069a040a15a61ba184248fb12f1d1b098d1645116ba610e892e1cac63f3482151432130000595c4576041305a11c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}