{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4589",
    "entityType": "User",
    "nonce": "0x3add0dc51fe1535317cca59e6c2b72393de37bc19e25d3687a8e635af83d49b7",
    "signature": "0x0188876cd0d58374be98cbcad387cf8101f067556b19de21009a2d0823b08fd948cc22c334ec5cf6fece52f2523aad833808c75b924ca8f1956c7f083bce911b1b",
    "signer": "0x67E321241D4e44e5aB5D1c365505f0F33044C7BE",
    "userId": "460631539"
  }
}