{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437698972",
    "entityType": "User",
    "nonce": "0xf0997c16b7a52a141e69401c6d7e6a187937e929e0ca4ede0b0b51f1f4caedc2",
    "signature": "0xa20b9dd2ca3b80c3e5e587a801351640e4ae051bb4d301ec6f61c5e782583a721ff9e8d77fb0dfe7c2ddea03d86f8b45879415f29d98286d252f7228b12e7f5b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}