{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4220",
    "entityType": "User",
    "nonce": "0x5be633f576f5f83cf7b9931009aa3cd12dd7290a5dba6a76dcfbb159840db352",
    "signature": "0x5d6d9c07aaaad4c2d4718873584588242958d989893342e7baeb4ee1e882805d7732294cc946648f72ab1b765fcfb05f8220ba349e7eeec973605d707ff9efc21c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}