{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x159adffb87ceff8ad14341aac23cc5b77dc9e10ea5d2fbd578c4b7fb1550e778",
    "signature": "0x6a2aa6b3ce971caf836f5ec672fae6ebd55d7a4466ea9ca7b1f6221bdc3a72d03b23677fe6022a9d82bd39155598f8db3dc9bfe5b8d980d156896af107e6371e1c",
    "signer": "0x5b2F3F58c9c7f7A4C88db0bD454A1920416Ff15d",
    "userId": "51387"
  }
}