{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16347",
    "entityType": "User",
    "nonce": "0x97081b6fb63e661dc5677e964e55f814195fc4b00b30920a8d6d45a14a82287f",
    "signature": "0xc389ac6d83bdab0c3a8becf3e935c8d3b055d4e7fc024b09cc69b50c51d046a81906449859ba8279d5089f65d9603a46e8cf9ed4073333ade9673a12a1d6d5571b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}