{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210374",
    "entityType": "User",
    "nonce": "0x3f8095ba2c13ce270aa4ae8030a2c4861367f5d9661a2d064f292d8974f9a64f",
    "signature": "0x389b24a724eba014e8d7ae1f89fe9c491dc802df0998c1cc2ef5652880487fba76b58e14d659aa3d460e72b78da087d1edc3e421846a8053293c175bb08b0e041c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}