{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136173",
    "entityType": "User",
    "nonce": "0x9edcf291c0d92fd1871e907dd04a8460574055992d5ecb7ae67f59598ad2eac1",
    "signature": "0x721f37cbcb78b32b022876f1ea9f8a824e0c7d708e3f41ce30af05a091b3be34608c4761ad07605b5fc7bb805e8a405608672af8fd169e903dc22fe9933263d31c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}