{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4acb8ebbdc44afa5eabf9afd7555c5383ff2e058d7c0ef1b1e711e4276bc5cd4",
    "signature": "0x3106940e48d1807fe09e96db733bb643a65866a72f5e71376e30dcf5caf3fd387c8b538f8e5d20070f6df0048907d56cb25b49dfbb532e03dc6681cdb72b61e61c",
    "signer": "0xa94e4C47a5C11B5C0b4EC90e5166c3AF602dA094",
    "userId": "458060869"
  }
}