{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105504",
    "entityType": "User",
    "nonce": "0x9db702ee0583253b34ff6337c8f152b4f9f74727c936418856bd48f15c8adf79",
    "signature": "0x97bee5701b1fb0788520e55fea2e7713135397f6b3a97ad9b3e1a297d949464a4c5121b36046fbc8b0769a7284e7392acbc2d7a19ba81764158876e71e23011d1c",
    "signer": "0x641F0ca56b08cF1eB27b9f07FD6D26E53b718b3e",
    "userId": "453799318"
  }
}