{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "876578212",
    "entityType": "User",
    "nonce": "0x8b872d3d2b4b89c714111a7e2f313c7b72b724c8003f310f97748c52d17b8983",
    "signature": "0x74a84b311d51607059e63856f5014933330de8bddc0073bd30b564a016d0385a373a702a89ba2dd5d234120073309bdf26e161d6ebde5ecdfce48926dbdabdb81b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}