{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x3cf9d75c93723dbaa378b17b51d28a267d18b3529bf8a0579fd8f560fb15a5fc",
    "signature": "0x21a939ee869997229ba832bfdaa525e97a98a8d82633035943580e6356ca4e0a42664d7a0f1fb3f39215696a10b223f87885d0bf8e9fb09a8a21e3b46530f3461b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}