{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124231",
    "entityType": "User",
    "nonce": "0xb592ec6f859c9e54b69921e9be241da7d84fb515794bbb8194fb03121854568a",
    "signature": "0x5fbfb9bd542b5e56539516892260d692ee1fc3087aa7b87d1b69bd5ef8b14803234c121abfcc092f0763bd58ce34391ba002cd5c659aee7f825459bd25344a451c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}