{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x339edf6feadf7623640a280f457c1a8a5dfb39991b866385bcaa6b3afe2754dd",
    "signature": "0x990260f40c28244fa7ebc9715114b9fb7c283363eb290098fd3e022509bc1eaa5c6f77e798d6ec16bf8eec49df0f0af47146d811bdb5f3b18c55e80e311c44351c",
    "signer": "0xc0eb5f95d39a97b110D5a2496DB113549a9ffDe5",
    "userId": "349849202"
  }
}