{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xf44889bddb34e40131c24ad40ed8c21c2d933aa81f9e898ea92c1c7de0075a37",
    "signature": "0x0d2b37535ee59c8740fc265abf4f9c0d5704be5e9bc1a07e25671f1903b6f7f26a00111c8c88d184893041249ff404b99eda55e8252ce0ea79acb80b337450cc1c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}