{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xac9eacd35ef27a6198f72ab9e89e4f5a99fa3dfdf7512e86198f6c6351f09335",
    "signature": "0x0093b048b3023711ec1f8699df3dba50716fd91cc722f4ba761961b1a551bf0b0b0bbf4ff4ca95e6e3351af4daf5975c0316b9f3e360129e69089719240536351c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}