{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754997",
    "entityType": "User",
    "nonce": "0x2c2be48c156b0549c6a80521ce88116423aa8d47807d679a8820f78f0501cdb2",
    "signature": "0x6024609fc5152ca558732542052c955c386c0a8311847ce78703ef6d05b8099712234351e54e335f35b79f2d9fe7bbb846b2f1da76341499307b8717e26654a21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}