{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x17d120a2793caa0b98f286bed79c2d7bddebf19955870b0935963d0224752580",
    "signature": "0x1ed3b00b69d83373a5784da98f7e5e0d50c0a1d8961b91ab412e456eaf6ca1c1247d4f3a771acf7e3cfdee0fe6d4d5072b59c7a5c9e0ba95f6e52e072ceeeeec1c",
    "signer": "0x54DF377599a1C40291C2c518c727C716D504e667",
    "userId": "591810501"
  }
}