{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75675",
    "entityType": "User",
    "nonce": "0x08a8d683cf51164f544571e8f0581b6303a5e0b83ce28a944ccbffd45d455c1b",
    "signature": "0x3c383ad21e210f33119a1e9ceeb0217d7d0274f904fbfe4721ba6cdddbe8044214d940ff70c4e8045da41b51070cbaa8c9fc55bc1d20df50155c9d1c438e49fe1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}