{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1575278",
    "entityType": "User",
    "nonce": "0x24b07d6f5941ac09bd4e9f9c7dce14e57380a4afa2f0eacb025b889e00b9f974",
    "signature": "0xc034bfbfd6830ce1f676fa574bf56304d5e6edd63d7a6cfad89f4a170002e8002cfe5670b65bdeefd2ef27c5512e26f542361e5e05c1858260331909053bbbf01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}