{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143442",
    "entityType": "User",
    "nonce": "0x30147b94d85692901dcb5ca64c2476c8e3ededf99b8e12eff648e8e2a1ea2417",
    "signature": "0xfd816d8466d8b331cab1ffebf114e3884044d6764c9701285ddb385c88d56fa57c5883d0cb6b385d73dbaedc250f602618dbaf68a78bcbcce10b30ed82ab75451c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}