{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324454",
    "entityType": "User",
    "nonce": "0xd8c34ce7a75c5716a4ef799f8d127a67ea47dd36f0d8741f5cb092cee4f5182b",
    "signature": "0x50dcac9ba757eb8f39b8a3781eba275d29fe02c2ef0083937881db6c3dcd8d7c4ad5c35e0df9d999042e6b7d4044e47379c4bd3d06f315e625d0b00825b42f5b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}