{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa78b3775a2a2425cd5b76b943ed94f606730a64876e7fac57855c8e91c57e63c",
    "signature": "0x8e916ece90c725c9796cc26b111063df3315075e396b4bc5a0ef836fb1f1cce95b83771759fce960de8c5ee1d5c1c99e652fd5d7a4d89c7dff0de28d4270a6d91b",
    "signer": "0xA5c14b749B37C8348fC7102F6478FEb0a17a5Fcc",
    "userId": "39019636"
  }
}