{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278206",
    "entityType": "User",
    "nonce": "0x7fdefb0ad871e26a5828b449f093d93b613ea181f85bda58dd9598dcb164a4af",
    "signature": "0x6f9a648701ce4790e2834b6a3bed92dcc44561403921fd1f98790d39416cc6a8621c9c4361390e41bb3b7ec504db0ebc0a0f078bc244e88a641b3908d71310141c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}