{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xde8f71ddbc94759fab8e975cfb622ef7cfabd6c8b0893db6f9a3d795ca2b06ad",
    "signature": "0xf5c26e3d433fc0cd8883b768f5b325e9f6243af2b7815953528e62d13915d8ef2071741fd1b7f0367f5b6fe9f724ee3b2ba83a72722692c6a45414fc592230ca1c",
    "signer": "0xE31D679e937c708b244Bc91B30fd601EB0540Ae5",
    "userId": "223959497"
  }
}