{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4f806390844e430410d76761368a1f8ebe5dcaf82c00afc754c39d891d74342",
    "signature": "0xb8dc3c9538f23760f5d05bedc4be691c69507d6f02c8c7a67cdc58c03858d4676fc236848d3ac202bec0dbb22bde69840910e48642feaa39aa262a30cd4997331c",
    "signer": "0x745A74D12f2b6345b74705904A292d83Cca926fA",
    "userId": "518603145"
  }
}