{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624459316",
    "entityType": "User",
    "nonce": "0x3b69ccde32e2c4056ea2d8777665d3595ab9ea86443888eec6dc84394b1ab0b2",
    "signature": "0xa9531e8499043d05e39dc152dfb1075513e4cb29455fa5694f6e1f6bdb7428f16afe355829ecba7d588e600d6157574d4deb73eff423a8ad591a0d5b275ba7551c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}