{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5615",
    "entityType": "User",
    "nonce": "0xe28790f6a73af908e972c6603ada5555051ee8452782907d3b4c879a5ae2d90c",
    "signature": "0x98863197bfb082ca498ac03b8dca0b7deb885e0738aab99ff4e5c5b5655ddd31777a119c203ff0a533fceb0fb35e98326982d791ccb53c0208ac73e403a9b6861b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}