{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "502388335",
    "entityType": "User",
    "nonce": "0x65e5ea3985b6c3893a7041d541af9552ecef90b2c7f28a23b2f6be306d9bf4fe",
    "signature": "0x36b54c8d39750f88387773acea0789fc03bf59f75e7cc1adf6de3501a09e024373de41d34a91ed46c2f7d498926d4d5154218a2e4fa9fce78cfbef8c4cf46b301b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}