{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x8aa66c7d02fe0001d62e2e81173bb4ee6c6d3d7038b4f034c61022bd3d3ba9ab",
    "signature": "0xd4d037ca7d2fdc3c907eafc7f7ed7c7ed742f0bb9fe00c109a6054a6b0f05e0d2ab01a47be1c6042a50b92fc651e638e7f8289e1994412ada6dfce95dc3191461c",
    "signer": "0x1c4Ee34565eE3A8304706138026D7518821F356F",
    "userId": "584804802"
  }
}