{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x52b6a6251a8861e044d183a5ce8b3745051a6727f8f06d72474846ba7817daef",
    "signature": "0xff4ceb76a647f2b547acf9a7ca880e9318d52fde0901fb3a4b06065ad84582fd203b3b3c1b8e56a26483ecd78d264d13fc283ca282b0f174b53d7218b09252ef1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}