{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294737",
    "entityType": "User",
    "nonce": "0x3092e1262aef2a7aa2f1de42e0a5c788b91e83018f3256a791a372dd8d44e529",
    "signature": "0x966b581468b2868409fd2095d37f3b041a918d2fc61265e7d565b12998f0ba41283fed4ab00190d56cbbd4bf64fbbee7c3f3cd04a4b35458e5dd500be1f9259c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}