{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xcf3677f83051c9964fb5c677297825e510323f72a347551bf8275f78f4188ca2",
    "signature": "0x43bd0f8bfd1722ed8839bc92d084d90f25af7091f8e7e06a1aeb5b766941fc983a1a8a7c4cae3c8b9c243d09c89e6b68effca8bc145477ad32db01349687bdcf1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}