{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3603",
    "entityType": "User",
    "nonce": "0x82bc24858b6560f297f3a43b093f01df3d263dc79943c0147668ff6842f67727",
    "signature": "0xe123d94001fe9537f8a6980a751d03b8781535b2e9058c55c65c199e9b8de58367e0dc1f066b5b260d603f9789b17ab3dd7a422ade0a59eab6d54635957418021c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}