{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "973445479",
    "entityType": "User",
    "nonce": "0x8dfec4ea512879f1487e33774fb5504964eb66e68e97a5031e2b21d09cd71c10",
    "signature": "0x5cd5bf7ffe1483ecb99349742ac9d1eba28ffd97d33601aa28f9d8dc3a197e8a1fa9b20101f4dcfd84417e96fd69db32c89f17a6f7686c68d2e0d4329065c42c1c",
    "signer": "0xF26b9D7D0e6a6B25c5e9440a50c0e5284285bDD9",
    "userId": "222410"
  }
}