{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "408807",
    "entityType": "User",
    "nonce": "0x14c50f9084ddd9608b0847a91250d46767afb73b46911b229fa23cfc104f1b94",
    "signature": "0xd4a52aac012350bdb73c751db17d926761b3aa347f6d0c0d4c24a328934456ee46a53afc773547247951aa7b23b7102101c711ef5dc18ff2a99834124b8635691c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}