{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x0506fddd845e7e6241b5d7eea9496d73920dce465ff8292b880d10b7281b0a35",
    "signature": "0x4feebb0e4efda68e1dbba1afd7843efaf2a52f9f2ff7fb28e5a7f826442dcb2f46b5c080badacba439c7863a0962d093d5473d5b1cb8a790b1072ce9c8abf2e61c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}