{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0x2163e88bd3e478360d9243d5fdc4e816d55d36995062d51c651dd0b324d253a7",
    "signature": "0xd8e375277e8e9b0c1122aa14ca5812c79fc7060cf15d2e908171231f576d8d554d3c4b3366661cbe4335ab5a5f2ff89cb7de7fb98ab1677351e2ddddc0fd0ab91b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}