{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319704",
    "entityType": "User",
    "nonce": "0x6218eea56ab6f347881a0b7680573de40e2a5ece75674c1afe27f2420f5bea83",
    "signature": "0xed41b20206b36997e6b342ea5659c11e355262a7d062126bb43804d8c98963b147a9b6659e5011b43a1172f9bacfee0c5b64a9de0b9010823191f9e9e2d7c7f91b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}