{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x92aa4d40164d4ea30b3db97854d74dc4cd3cf5d38c9b696060e5501902fd7947",
    "signature": "0x23016e4188bd4d5825ea5ee3965ac5a2372df959e8d6b299aa4bd33d93a6a0a0455dbd44175dfb452b75c16c7a8734e9fc389a5e13a1ce187fa20f21335e79231c",
    "signer": "0x7bae2bFbA4Dc339400A10B76D2C6373664e15354",
    "userId": "491386326"
  }
}