{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681632",
    "entityType": "User",
    "nonce": "0x620b8087843b73441021a1b253bc4ccbac10e7ef6682b0382c8841c99ca6dc3c",
    "signature": "0xb23d589c1bc2fbee9f6c0cf910fbd861ee7d73bd870a181708e810aee9fd0ab674b70a2e0bd70559a456d479ac214c800dffffcdc16d98829e3871a14963496d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}