{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353241",
    "entityType": "User",
    "nonce": "0x5cf6a1f6fb6c3a76204acdf613be618243eda18cea4be9e59c207cd142748b48",
    "signature": "0x9e5e424d4ec79f29e949f382a98b08297b3e3b829eaf159574fa6dcbe0c638173e694f2207f4190bb22464898dbaa2499111af5c4a4afce62656e574478259301c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}