{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313221",
    "entityType": "User",
    "nonce": "0x07c64b002be0ba9465071749972ce2eaa1508c4791a34dc630e38d0f8fa7b496",
    "signature": "0x3e04f0356830e7e4856d5f26b5b822271e8166df4c8de204f5f73aacb4167ffb20993d363cd8f7a59088ddc2621c55142e32682201e3c6462372c9e13f35e3d51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}