{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x54bb7bd37d03a946f624f013612bb5c2aaca79903bbd48eed7f43d0ccb58b226",
    "signature": "0x070c554c1de2fcb4bd70306d21eaf3a9a8becba24bdbad1ec96fbe2e6df19c6a75515e72a237e04573bef3b79067148eaa13479c036fab619b5615177a2b86a31b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}