{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753584533",
    "entityType": "User",
    "nonce": "0xe1de193929ea9f5630ee0586d3dd56f72c85757308c19ca83f4def21217d85ec",
    "signature": "0x88df00237fe7e674a5740baf2046047aea53e0b3359301c06fe7473f8eef8bcd3fa00f09cdc268ad5cea282312fa0214ea93824641b1b08ef19bbc4b84bb13421c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}