{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874277249",
    "entityType": "User",
    "nonce": "0x3b6cd4cf523be9a391ec583d9a2f5e30c0025e4acdd1a0eefd0d97685a4e073a",
    "signature": "0xc1c883d1bd89b7e7c7cf101082845c9c99d2cae5cbf6bbf2c4e86400e946dbe9479bf87246bcc239201770513d83114f03bc6012188147eca2493b7037da7a641c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}