{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1694012",
    "entityType": "User",
    "nonce": "0x390a5004f14de76b25c316ef2fde50393fb31ded81938bee99fa10aee93ed2a1",
    "signature": "0xd7a3dc55f6ab3e795f8e53068536ca51acc9ed6753b63477e26cc4b0e9b3068d6bafbdb143103476a8554eaee5ccab8480998ac41d079c926eb15b06f157ac5e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}