{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1422981",
    "entityType": "User",
    "nonce": "0x88c4b5ead30f20705d1760cc11381886405d91046f7f75e9053152e98602d05e",
    "signature": "0xdd0423ea221995f076f197292c5c3a3610abee5b9773e96e1704dfe76fdef2666070aecd31beeca90bd3ce80c6ccf92ba86686b0bb05e81a51b5c7c5db8a9a101c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}