{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424871665",
    "entityType": "User",
    "nonce": "0x0fe9527c255f984efb9bf87e190e7e34d37beee9d44ab0b8a9ddbd04f1ee412d",
    "signature": "0x9423c8ab3799824426720a63ef6bd1cf3805cd262954888009a55d68fe307f1a0feb762d281c173fefb0c3be18481b884fbafc16d3db1379e7c1c49537723cc01c",
    "signer": "0x044142FBd4AF7201d53A9BD1d822768a436d6314",
    "userId": "683311144"
  }
}