{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1894875",
    "entityType": "User",
    "nonce": "0x144c96628417843b5a3109c1862f16256dfc85848bcc6a3b3c194591c95a5d1c",
    "signature": "0x6cd1b575ea1a498bfd6a8d4fc5585f4ee54aeba26bc463e9bc1100170161e30b3edc18c0bf16087841e3f6c9e0d70f419452021908b7f2da7e35ddd73656ed821c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}