{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "625201833",
    "entityType": "User",
    "nonce": "0x8f82f3f3d9c503bc63759d6aa5984331624a15416025f49ecaf7ae28b322b77d",
    "signature": "0xdf29de8493b295bc6197103686e4ff8d9aab425194b7d3ad5fca0efd3107f2a63076eff6f2a3bb12cf2a363718a66dba4e5d0d6fbcdb25c06014125bafb3b6d01b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}