{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc901a60da4ae12efa1eb3b1055bfb3869422e612cd1a95b60f657f706dc7f6bc",
    "signature": "0xa3f20d50635e4f9e89345e5d2fc53b8f50ef33dfe98ce92e3c5b50d3175c92424813aa6e99ba8c3858dd5bef27e7c6cd3821834d26d469dbde2034a90f783bde1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}