{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5401",
    "entityType": "User",
    "nonce": "0xae3563c35bdbf5de7dd67faeea475a4f4def1b2f1a5b762b04968cd342e7df53",
    "signature": "0xa2eda751a1669db75c4b85309c2458cc799d6867df1d8097963bf1189f6fcb05737ebf8c40faa42be04fc04bf671544cb0edfae85f0a99781f559825f4f3b6911c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}