{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870",
    "entityType": "User",
    "nonce": "0xb9b2795cb0f26ebd2a4ecc85b9af2bdacfad4c569a4a90511160897c30d59f00",
    "signature": "0xf325058b8f4e5efa5ec7b01644f96acb14aba26aca0de6951dbc18905d3af1e35b894fd99d1e9e71fee5cb2af25af006e55a8d8bc45ac69b601e22242281ac2c1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}