{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323124",
    "entityType": "User",
    "nonce": "0x483e2171819705e1470d725f20838e337b4547488501d1e009dd4ef1252cd4c7",
    "signature": "0x95fb3ad260ad3443af6cca26bd883d0ed89b304c645ca57f998794dbfcdb36fa1874407a67c1a8623bf74bdb5236d1350faa15c7483c8b80187e34ae1b60e2e01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}