{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6fd8b2ce19c328a923d103289189af03568760b0918fe4d9a9ec3d1b7b25f058",
    "signature": "0x1eb1db9e93c1d4de5237ca7b872d03694ede8c8a334cc882566544111f981d1a586a0b3e0c815bb558ce14bd54f70fa11c4631f144d578119f37a4ad49c6c33b1b",
    "signer": "0x3B1A408F8F3Dde85C59FE03F196255E37E928CB0",
    "userId": "371765222"
  }
}