{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2703",
    "entityType": "User",
    "nonce": "0x194935ae4652c9067db09ba7c1b85be4bbe43505ed8cd3f179adc1f658fbbeb2",
    "signature": "0x91f8fdbdde81a278a0ab1daf20af7494ac5f52647378b5d2a22f4b0ad22dbafe4f9ccf6f027fb3b0da241b48ece0f253bfdd595c23aeb924f8e51044053b04401c",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}