{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43773",
    "entityType": "User",
    "nonce": "0x1e4f93b817599b82d2c9e2c64cd60a69adfb81c7fcf92a7927dd801e86048ac2",
    "signature": "0xe3a2778f6d22784033e77a1acc2a088eed774eb61070d820576b1eacecd74670761df4a7d76c979e5f9fb5c2d9ca6760ccc253d1939f36b6b5d8bb7c722a78ca1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}