{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x928099ab67fd96b73cdfebe9cdd04bd582256a38c2512b73c864633418fcb88d",
    "signature": "0xaad12e68a87d8bb8ea7ab560608a773aaadc31b8356117c9e2693137f606e4091f811f108edaf30c6f49ca03f5e34e35e868745e677801cefeb2c62e69c103511c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}