{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406348454",
    "entityType": "User",
    "nonce": "0x6a4aa236215403bddbacac1c3b5889a647413569415d9bbeb37cda92699e90cf",
    "signature": "0xc756e4954f64ac0cd94a9a8d3ff30955bda443ba76602aee4846b2fd4c7928c443a827cd49d21452ebd5b08de25367e0474d4a440bac3587d6865b2748250b7f1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}