{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728434",
    "entityType": "User",
    "nonce": "0x12e05efa164bf870595afaaf5ec49d084cd5661b71a358fa278122412bfcc115",
    "signature": "0x3a222dbd06502c57c4f99dfa7cd635d5d075408f9f54ec1503ed326d9df35b2901f70509fce4690576406549ad520744eb4232d5fc76d2db520259ede8d5a8a41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}