{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x5ff7ab5d890fcc94488a0035241a46c9f70ccbf462b043aa62872c8d41c2e2ec",
    "signature": "0x886f80517e631b1c03f753391a46186a9edb37c961d6483a166ccf4eefd76f320dc36b572f2c0fcb1fcf026851f76715639f86ecc59e7211fba9f1ddbdd699f81b",
    "signer": "0xb51B50C9b7d88C66d31539161F4BA9Dd72a17dF5",
    "userId": "465531556"
  }
}