{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409129",
    "entityType": "User",
    "nonce": "0xcd53b922ba7a63c749f62989b5581cbc57e7b09a629e1e1e22b5bbf354d339c6",
    "signature": "0x8f1ecca6599bf120eb403304b4c89573f001b62b76702abc78595f9a60c2e26e3bc2873c933131e17c951fc2193d5a2c4acf89b7ca9e0bea095d75230078e5b01c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}