{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12634",
    "entityType": "User",
    "nonce": "0x29feb77e79bee34e403a8e1ac54ef8e6e149e1b2540a939c760860c190e14ac9",
    "signature": "0x6499928f5c261203e6dd9a669d986ea2ec091fc9e7b21a586da240130d435fb500391f52f4977a510c679751e9cdd8de88d664744153d053d31a2772c29448111c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}