{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12187",
    "entityType": "User",
    "nonce": "0x856d6021a835a7c7ebb8594496159a8223fb55c5be0928fbf5f7125f76e655f2",
    "signature": "0xaaaa6a33d1b5b2802d57eba0f65038c9d31a8f203d81fe380aaf7559ba93bc4f4de1bac30b41f0f93753f73eeaafdf8221d524fbfc4d6f359255cfca94be62251c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}