{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b6ae470e8734b4ae15532fa4c8c9f3c0df33420c3419f6629fff86141deceb2",
    "signature": "0xaf764a833f95a55dc3660410701057d472b3c9bb44ce72391d4f70fe00d4448936f60aad34e1e50b47cddae66c16638f90b6c16f4d28bcb57e06781776e1b9da1b",
    "signer": "0xe89B4eA46De23545E8AcB929115775D26A5e8a8d",
    "userId": "539962318"
  }
}