{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683",
    "entityType": "User",
    "nonce": "0x5cdbd9d87055fd50790322829ea9568f1377d910dc63b26a5b4eee5b3d84a15b",
    "signature": "0xe45a79f701679775b3aac5dcc440da90b1f7faa15d99b8fa2d10a05e04477ae17e76d72a617ba3396fd7033cba1d32561e10b7c1e90a85b6ba4b1580634cbcb71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}