{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe656d26b7ccef1fa0294d6f4f5187181362f2362972b3cb45f38c70caf31a172",
    "signature": "0x4cda45bad6614afb3b4668e4e616229229f64926e99512ad5805b1ae4f32be4744e9ee5cfe0ecffa6e1bb976633380f5ae774b3068ed0152d656e381dc721ae61c",
    "signer": "0xFC64B2Ce4fBD6922262C921DeD45174e1bbAc9C2",
    "userId": "251933338"
  }
}