{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x8a592199cbd856294fcf974db3c88e7985ea34fd2801c15a335c6ace9bd0a6d1",
    "signature": "0x741a5435ec1a04ccb72a88a04a37893b4f9dcf6e16d4b03a358bad1bc9085520618ad876a10ab3c75cbaa2ca180f009c6b68de10939145087de1c06b435b18bd1c",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}