{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475275462",
    "entityType": "User",
    "nonce": "0x975b6a213c206966eac151e4355521484fb2f51a2a4c87f9cd6966e9362d25b5",
    "signature": "0x7087ac11b1383af9a41b2f0d04398bb231c38d1db5f85bc54ed5064865bcc28c3ba203f9f21e8dd882971c608f6ede978d263978bf2e97b074360be6010109251c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}