{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730943",
    "entityType": "User",
    "nonce": "0x5fbcc9a2a615b273e541f55e19b3ea1b2686d9f99635bbf64d8807a8d646334b",
    "signature": "0x22c8b9d9f2c206f133e3be9883c7f13c0b623023689470ae8a21e83bb9c15cc3066e2d4d2494b222ff734accd8ccea2f11693fb24c206566cd6891e3e49777191b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}