{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450479696",
    "entityType": "User",
    "nonce": "0x23908da2290e943caa78cf9d91bfbe1d22b12a5a772ff97a82fed2bdeda3fd82",
    "signature": "0x58b07d9b3620dc328b8be3927bc1373bef4871b792d79e285d890529e67cbae7749c1e74b7eac71a03c7f7b71d96d37c1e6171c2e5aff62df5acee1bf544b0b91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}