{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x314277d8ad791b1057c95d9873c9545a5fee4ff3b316a187e590c6d5a336abf9",
    "signature": "0xe0ccb879108cb8df5d04af4aef147909cd917d126c2b570f3ed754a5066074e239a5fdc8210a01b921b16636e252bc6a1daec31664f0b0fec24d9964b997f7f41c",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}