{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75148",
    "entityType": "User",
    "nonce": "0x2afb817860d32c5473771cd12ca48e0be200c4a011e3e1043edc8520a253b249",
    "signature": "0x3c5ec509cc6e207185db4a61e0c1e1e33e9d87b75beb221e61065bbe77fb80aa23cb2171857df036644adcac1904efa989de8beff56c43a5a73cb89f7ab8250e1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}