{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9200a11aad0df8551323624230f337b167200693dc62fa2024dde3fbd47f6ad",
    "signature": "0xfdba00e7145e3313f66add55ea56bf362997045eaac0bc66e0664ac64e33ad3056a29807dc3193aaed017e527ffd1ffc3b89856838ecea1e68f654b20f70a5c81c",
    "signer": "0x180F1F6934CddfdeACE3f0568fd5c0DCb186E2ee",
    "userId": "881332718"
  }
}