{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0x104bfd1acead5e2bde3b91b1aebeec4df0539da86607b28596938f516f805b5e",
    "signature": "0x44a78683fc69a6e0293ee78ab157b36b79aa86a63ab69fcedb9009e5e6c0cd9a7046a4cbea40145250b7ef6fc3e6b5cde7c031e6a4e67bb490626b4b100abb3c1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}