{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xa1b15e1effe2b1c61cef837294e93d589fef91b74a8088d4e3f8c429cf2a4c83",
    "signature": "0x3222d78e1eaa7bf7014b757d6bb2a398d2edb0b908925f77359ca7ae5694da2b1e5ec43cdc9c9118979ac2224292f998b5b59c73f4af64fe94063b2388f57eff1c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}