{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xb01d7604668980ec3a55cc915bba9d21d046f7b7110949c4a00e1d0e6098d0d0",
    "signature": "0xb6148c0dbe2eb5ff003b08359d78ff498531764ddab52f39c7c0fbb17067e473274a51a9d7f0a0ac75f2f081c8e29db5fdd0b6133b5e02c76ed529d9070ee03f1b",
    "signer": "0x18e80443A33c763307bac21D4Ec54B381DFC58cA",
    "userId": "964025330"
  }
}