{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0x3d1582e19e3cc7df930b0a17d3dd8836e9ee00c7c54b18d15ca1984165a6d998",
    "signature": "0x2203d7a5e1e17ce5fb43090f64d2433469e263fc4f7d8fbdedb5fd9a0b92524142eac18d1f0e24781ad9411a7020958aac549f14700e1d33559a81a55a7966171b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}