{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51376",
    "entityType": "User",
    "nonce": "0x6a2b7582369fccbf81596f55a3d02947fe00c0565995a78901450cd36f910e7d",
    "signature": "0x126d352a908a1b2deaca3b24b4c8159e985a5a047baeee1707ad98d5aa6b85b475cd872706e8e05a641ca2cc264151b43c87969b34a06ec73d9944370ab91f9f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}