{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42216",
    "entityType": "User",
    "nonce": "0x18d0c61ac64f486c7ab86d8c6786eaba9504546ff5d043d80a9764652551755b",
    "signature": "0x40bc2cabb21d81ca1b34c529651a652f6ff1b71245eff19dd052d2b3863dfcaf2b06998946c8e946b09c8447bc0cdbeaff4b2bd7e58b440f3b18922a0365433f1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}