{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x017371e4093fde5035129e7a5707fb0b8bbd10748f43628981ae95333a217bab",
    "signature": "0xf3af340b7a3038817cfaa30fce8edc4045cd66b49b2731f67903eb6fbb01786c57a409a81543583351b02ef0f48c303265118c3c0148cbc3ecdf70ae36abc4301c",
    "signer": "0xf3BddFAc2E387B46Cec0ccf103fD7B4065c143cc",
    "userId": "960956875"
  }
}