{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x964ce4101e46a83f5123b2308de4ef71f219dd127a63a6aa75e4a0a4110fbddb",
    "signature": "0xe9fd01a0bf49af86e6826f5b152888d016d4873171af99376154e24d18c2fc5b38733d171a8a2c23722ab3460dd9e9b9879957e9b031c998bce81d1debf309db1b",
    "signer": "0x5a43e10e89F5f4b19584D61C799C8E20ECe4EbEa",
    "userId": "976268545"
  }
}