{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257375",
    "entityType": "User",
    "nonce": "0xa09ae6541ac755934f0aeba5445e845b9b5765714c1bddfb20026d9b3f423a83",
    "signature": "0xab5b9bf6f7436172f24262b11a6bbfe00352cbe0833ba526840ceb8c9a346bca2990ec2abdb177bb05685165d1c7845f5f04a973aa7ffaccb4e3381a37d292501b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}