{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c224e80df12d584db9c891d46c78dca7f1fbc572139bced353e02802eb6b0e7",
    "signature": "0xd438021e09661768cb87f8c94b1d056eda15faae0182eeee9ce6cba304c7ab150f094c1ed7654b0dfdca77a1bcb00629808cf64a5713c6a2a90ef9c9361ec34c1b",
    "signer": "0x879bB376BB5e160d42E12Ccef817412570799a8D",
    "userId": "145947845"
  }
}