{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445252",
    "entityType": "User",
    "nonce": "0x4677c30c9a792a1e4b206d591e0fec9bb5443a884c10c088f83646cdd9dc973a",
    "signature": "0x31e6eaa6c912124bf3326028181d2b22505a39ed9ee5fb4e7863dfd558b9b41536ebbd435b1e21844825fde63de0288b2e73782cb8a9a119a9bd85b2e9a974901b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}