{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37943",
    "entityType": "User",
    "nonce": "0x79744eac2d6020d855f42c1fb614a2a50b8f89c09f6f786ede390bb4963581fb",
    "signature": "0xee6e7e3fe78b41ec450bf8963ed554ba79f2995ba9de1c8fcddb63f94c40804e296a9b944741fcb87ff36ae12a8eaa1cc6c4f5364d11ff99f5879920c3a600781c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}