{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d52aba2a56dbb64f79fa8ddf79a6507a723e3b349bc25f708d0fff240963330",
    "signature": "0xcb4c8d282b975a42c1c02c3770f7888293303affa15107656ac9b64bf420915a40b22e5b2915f753bc51e5fbd5449e16d0be62df87690ee075eac021f4f5261b1c",
    "signer": "0xf0aE5dc768355f3F6FD6d36eC911c860C8904Fa5",
    "userId": "405896524"
  }
}