{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x80e9a37b0d2bf75fcc1e31b6ab08008d6d7d875876c30627202b8a4cc9a4f896",
    "signature": "0x44a9e53a6600b274ad8291b828a293df5c6529d5adfc06177f06e7e8fe1fbe5a49aa166371faa25a970955b348050db6e3cd0a9ed425702dccc5938869c225021b",
    "signer": "0x0A2F5D4CD50BFc8fcee7d40dFDCfBf866422FfaC",
    "userId": "675013541"
  }
}