{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689259710",
    "entityType": "User",
    "nonce": "0xff76bbbe6f5ab60b2a8e5aad6db0c56081bdaf7cd7e3a4cdb53b57fda17256c3",
    "signature": "0xbabfd0a2e6bdcc9abc6aeb760381364240c41c0a8992bcc8aa431600188a65966b2aa1dcae1a746fcd17c9aee3cd4e14c638f276b4470d957fb62cbf8b49b00c1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}