{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "762416789",
    "entityType": "User",
    "nonce": "0xf03913940b3951d2454fa2f66ac8e0130e49eb6d7f35cd09debb811e196ed483",
    "signature": "0x8c6545ec99ed63f2ba1393a5942e519c5fa650ff3c38b48eb63d4e5ad3d68028034666d8b11b47d898b8f6efeb7e6044da8d5545d6798b21e8cfaf4cc81394041b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}