{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90fba377277be972f61e919096fa992d36e3c149d20dfc0c3c35fb5a3509f9fb",
    "signature": "0x2d5efaf62c964a59910f87f5533b070bb087b2c4ae64ce6cce6f70ec6bd75d0e439319f1a20ec79206d1c54d02230842052e7654096fdf00e01a67d09a786dca1b",
    "signer": "0xA7E9e79581deCe6C725e088554Da8fdf3b1edfAc",
    "userId": "338745876"
  }
}