{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25f64efed8257ca897aede01b055e42f3b9858875eefc98a4c607778527370cb",
    "signature": "0x97684dccc9134c666a0e3dddc6249173c63cb8ec3fc745cb0372a5ca3edf1c083e5bc334d81796e074b0b2b25d1a66ccd37e904e1840ade4cfa78f3690a587151b",
    "signer": "0x5912162E960109c557a61cA53B6be4c3d3324Db2",
    "userId": "54423144"
  }
}