{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399505122",
    "entityType": "User",
    "nonce": "0x4f1b24165b64aa4e335ec64e363b4e4b1a3a60b3bcd588899611fb37f5ca5935",
    "signature": "0x2725c9ba7e4917b01a9e5812544b4e2a2cfb40fb96e847fcbc3a7c6942fade013208057d9842213be541a2fbbe12d332dbf82636739a0ed009f19b097a8e14771c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}