{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "501463",
    "entityType": "User",
    "nonce": "0xaa9ce52cdc8593c8544353343a69978c081e47d3f7ef3f0bca99a1b16c03c21e",
    "signature": "0x0c141b75ebfdfe580934f18897d3376c8c906400c1410f421737454446ba6dc65afce8fbe2fc75ac500589ade58c95d775d8f2919d136488688655eb0b30eaf21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}