{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "773701833",
    "entityType": "User",
    "nonce": "0x40f83f1fb793a608e8a253c8006cff5bd006008613f0dacb64fbb89ff002edc3",
    "signature": "0x06a3e34f8429a0d49314d2a3f1491a80a31c8fb17f468f22e9f7034e53eebc34359fbaec8783f29fa17fef8d2fa79bcf5b727697af3beb920e6a78f0b939200b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}