{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171952",
    "entityType": "User",
    "nonce": "0x77b3889c06c9c82655990c984e29eb31b96e3c4c49c17e1922ec7d378b2a3b8f",
    "signature": "0x6af37bc90407c8d08f6ee4527a2151d4b26e9c1fb95a0e9b9cb613da06f6d5be64d2d2c084e3e01b4c30284c4e82158a4a06795c86b95101df550335080daf211c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}