{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49337",
    "entityType": "User",
    "nonce": "0xa19ab46d9268e38e2d33e22429698e1e5f5ce4491d568bb649c124925797c7e5",
    "signature": "0xac9ce1a07aa7c610626597c4cfbcd0c15bf44b6071a823279e8348eb1bef9f9513e22c776e92ef13dcadaff6e2444ade08d497e6b7a7fbf1048ba8919da3c24a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}