{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4383",
    "entityType": "User",
    "nonce": "0x64b998ec556631456ee282f3348db426f1963605dd73a4ca7fe08e13abf44e9a",
    "signature": "0x601f27ab8e6f9f3c122b886417a039729f8bfcf6795ea215bb2d5ea395e1f00175f02a5a205864e1d70380a4fe1a0754141c746cb9f986a11df8c257d5e3d11f1b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}