{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63f36c65e3cdd84d5bb70a0bfbd3ffcfe9293ce4bd88706b4220188368ac11a3",
    "signature": "0x67c50f1d739a6e9085c058246dec58cb07da66c801e7c49b957379a19d416887127ea8b21c269a4296fcede1a9d76aec377e105f50c8e306d9d9a03e6e7fcd601b",
    "signer": "0xC8b8a00690dE486344647d491eF0A4eeC0cA2788",
    "userId": "549681063"
  }
}