{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25f3d987f4989af008a2d1e3bbc0c19158d582c88f9b3bec887d1a9d27fad339",
    "signature": "0x25453dd31991750d923a7f05c67a27ec666c5db997447d0dba99cf366f0131ed4fbe589fcc9a3e7186050da5bedcffdb5a6fba9dfbb9b9d218b273b2ecfb66c61b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}