{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x46010597e39c23825f61c6f816294be3482acbabe9e59e81bf7df7a5d6ac7673",
    "signature": "0x4ad11bf7818ff6cce4e36ff7113363e0968b858981784a585171a8b8c7d75ff84854d122d89bba8060f4e646c08e0b9d281605fa7240fe826c6222750052d5461b",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}