{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x629f43451e1f9ef815c93427386f52dd1feac5a04765f72bfc69f5c9fdc19fb8",
    "signature": "0x6bd08c153851751f048a081313c5c624886bbfed3023f89633751b70721721ee024c306a4b890f63dd49b110b9dd096d47a973b6d816729a891480904e3473ad1c",
    "signer": "0x1feBd3f816Ec68734BAE26C7e26b9E16e485A845",
    "userId": "943379685"
  }
}