{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc35d16be667fb38fbecf9a5fc55996848dfee6adb17737c4a5ad24e1812e43c8",
    "signature": "0x3b8e597905faf6c0e57a841fdd78b0627eda0b7015d1be2875aa7bc0e166636000280f79ae7e074f35d19457780abe294a1081aa9b5553666b42dc2219bff7771b",
    "signer": "0xF90274a9681f47A7a6067404D7320A739B3BF916",
    "userId": "941420599"
  }
}