{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123497",
    "entityType": "User",
    "nonce": "0xa3739eafc5db17614f45a523fa589499ea798e27b08ff29f436ff0d0f3aa525c",
    "signature": "0x3db6ab73f5fd66cadf73a1c195d6f1128e7279bdc7bbb56379153f1dcaf4517a69b543b0d2df55255a215e1990cad4c564a496ae28d99d7cd2dc7f57bb1454731b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}