{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe2cd70528c91b744f61e0ebb681b8b18b595eb8e632a74a8159672b426b0175f",
    "signature": "0x0cfba26e482b9681be1f5e9e53de99388d8b7f17487b164ff291d1b65a7757b0348ceb9e25b2ca7552a127009f65e15bade6026804e172d1bfa85f97c54c6dc71c",
    "signer": "0x9b1a9d02F213F5C768F11FC832194b5cB665E056",
    "userId": "418702748"
  }
}