{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243887839",
    "entityType": "User",
    "nonce": "0x2dc74533100224c0a1fe0f42b99c6148d47e3a6a711c1afbb3beb8be5cf4717a",
    "signature": "0xeb28d818320d75372cc50b8d4ae2afc17c3e5293e26e7779d419b75b63b3a98f6df9b0073d3f89a96cc7972a1f93df6aae775e7d3b79c2036b270e01e8417ab71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}