{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "90136",
    "entityType": "User",
    "nonce": "0xb81ae0d82020bac830aff3066f5524bfe45fa5cbea751706c4f276d26479f19d",
    "signature": "0xc63382831f963607a517d90d70c40c76fca46a716b0a289ae529bd7f76d8b7b2364a60b7c5210d0be934098b892cd364b0bab77f15b9e6a21e700bfd5cf28a411b",
    "signer": "0xDE3686894b1BB7886D5a1995730930c47824F3e6",
    "userId": "323456"
  }
}