{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681866568",
    "entityType": "User",
    "nonce": "0x12b3ef3f9a4a478f5f54d987ec3a97c842f415f5259c9a07d1b300ee8b0a3b1e",
    "signature": "0xae7fa7de17a97c8d87dcb017c13d067f52f1524b811c498e7294924e6c663e0c183f0a53151c7935156c05ea43e04bf1a6831c787f335a09161c7e2796f28e8d1c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}