{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x893f92ec4961ac7b3eba25df2ad740699533c782be74b825bb627ccc04ff42b7",
    "signature": "0xe3b216ffcd44edcf391f0d6dbe707c550657ab15bc96a8a3475a161a89cea29a0f8b3be06f729c44d10ef495b1c446faea40a14ee464721fb51ae23b74a9fa0e1b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}