{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4bcb0d3cec0973297fa4b18198a25591b4f218880b651c73f4818a5ff35e2a11",
    "signature": "0xe3024c5e2ff2e21e02545714431f47f952eb4c8d3213d41a7fb99598764c507358ad0c3c91d72d409eeb268cfbd0bb865446a5553d846c6de4798671653fe88b1b",
    "signer": "0x920c2f1256C66a42B0740694058F59A398EfD71C",
    "userId": "655200401"
  }
}