{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45364c8fd2fb6585eea8ad612ac7264112507a753528e7f5029f36addc395234",
    "signature": "0x038a228987e38041b2d0ae89f6e5d256dd6dbcb1592506cd956c7825366a6d185b74a6413a564d188dcf453631e968dd64f4885db62be58b11bda071a7059e311c",
    "signer": "0x14a44C53D08aA6692a711d7254bce98BAF75DedF",
    "userId": "445404556"
  }
}