{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "924718824",
    "entityType": "User",
    "nonce": "0x24cbb9e3961a818e94b4cc7ee38e521eda2687152d5412fc27777310c69ec527",
    "signature": "0x3d0299e7e758a4e8bcbcefddfab442f78e19588ff47aafbc635d9938fdd1dcea624517bc4bad3ef4718b389e9a212bb9bea221e1a40a739607c0ed060aefe85b1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}