{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0xf9b46dccc7bb24148e0cca8472520b6fabfc7d22cadd0bd856eecf2993ac0320",
    "signature": "0xa013754fbfa95f7064f5a87b0b806792184d6a2c7a0c912e893a2497d7b4236f57f75acd514805d2e2508fb8f4cb33cc9510dd50da3e25c8d4dcdd40b588b8e21c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}