{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597677270",
    "entityType": "User",
    "nonce": "0x37c15dc1ed275822ef49e5dc858a270e5d6bc164315faf398f163e867eef288e",
    "signature": "0xf6219d59ffc8386200eb1bdfb53a2121094f254f7c190c99d51e6217a844b62876e9e756619e3b67a4f5130b8d1588e0f41107dbbf56baa78b152f123b8815801b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}