{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16782",
    "entityType": "User",
    "nonce": "0xaf8d1bed394fa54aae2f6df94049541e1e3b33f4f2de24dd17e673468d07a8d7",
    "signature": "0x4f13485c46c4e58a0d7b47fab5d5c4bf72bf422103025ee1fd7883cf4d1a6b9f0dbe4a3ffe90caad8c1ec4f3703ecbeee8fae188db599cc0ed45f2da43d675501b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}