{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211508",
    "entityType": "User",
    "nonce": "0x9cb33161d93047d21843f4ff436b90947ebc6d8fb9d8b10d03954e963db619ca",
    "signature": "0xf5a72f3983077ac1a2d6d5bb8d73e9c5c54e5910bb76c80fa93381a815037e662eb1888a3821b1d276ec3894fb7c9195550c8c1f757f2b443a728527d976fe861c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}