{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "548235328",
    "entityType": "User",
    "nonce": "0x43d29c76fe22c529edc575795f79e045e7559e0fde027ec37f68931dfb709e16",
    "signature": "0x4cd3a2af53131c2834f243cb810f472f13fb2b53a1b57375944578c20bb031b34179c1b4148fc01639eb53875248e55d0104fc3aaa5ca31e580006219e3321231b",
    "signer": "0x46323bf87C45258bE3A40FA31E6e17cb9A9829Bd",
    "userId": "654087878"
  }
}