{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89b2ab274a69955b9c93ced0720abbad1c995d8c024a5a80d7c2c0114f17c771",
    "signature": "0xdf4cf5ef6ed943e4fa76a309f0d23ac045b85b311e5572a1cdbf29ad030b089541d76591edbe2b569be852cdf7c0665a7717792063902fcc4210ef25aef7e9ca1c",
    "signer": "0x3F478069a9895F8A9Efb0055B49e49EB32c3B6b4",
    "userId": "284681488"
  }
}