{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7bd16cb6ee209ccd1c9df98936e53ed2acc922b548fe5975789200d3dddb86a8",
    "signature": "0x97f03a0afafe5afa883398cda7822493cfb172926ebc82d9da78e9d2340601ea54606e40c87ff0c87aa4cd193796c6db377ea0d52b3fe3f7f3b0da7ae19a806d1c",
    "signer": "0x633d9F446E645E4a4Da529CB996A34Fc6599F64A",
    "userId": "366722698"
  }
}