{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721",
    "entityType": "User",
    "nonce": "0x5a0492f2b55a3d37ea7d14916ac560053ef8f21ff8d7631061ff89c0b2b35883",
    "signature": "0x803eea2645e0abea318c6a2aee57a2d7f72bb59c0df9dca6c9883ecf141fbdb67da499d7c120f8acba10921b52ca9d31c84a839baefe92237b36c155712188521c",
    "signer": "0x60Cd4bAadFF697A191F408B1806d7C33576E5a93",
    "userId": "2989"
  }
}