{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0x7783c1ef1669a2b11a5bcbd39a78c91f0fa75ec0fdeefcaeebfe7d014c672142",
    "signature": "0xe1feb13d72d0f86758b27ffa2d5b65b318448ab2e06b90c675d9c3a14c82e54550a472105ef69cd422be01d8a8619fa54dc31e628455654545a75a28e0ef04e61b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}