{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "968239829",
    "entityType": "User",
    "nonce": "0x20e64e0fabb57f50469219e599c3cd5f8fe4d3913f4f05a9259e2a57bd70a483",
    "signature": "0xab2d0059a460df330c7843ad1f338288c5077ee8611afed1b66caf648b5e247e4aa3ef006ed0abb8bdb4c4fd857771fbf7ea0327c7543b8c287a1a03da6445451b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}