{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x798f63bf3f49fae89eb1676fe20b8662dfc6624e9f5f51af2e5fd0e1d6e889f6",
    "signature": "0xb4a45ab3ee19110ef55d5ddf348db1215f6d2421ac3717162ce7ad8c66913ad3080f38f8bab0c3cbe0eb1848c116a792e9b8810f72f1b027d53bf12a350165a91b",
    "signer": "0xF146DAbBEa4a64091535c0e39A419D65150Fa66c",
    "userId": "449203874"
  }
}