{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329",
    "entityType": "User",
    "nonce": "0xc2a565f838c7c40a3ab0ed4ed14da7fba6b8f5b3fcba5d5894f1c584abeb6a51",
    "signature": "0xdd6d575516084c5e891c858533a2a1db352ccfed844fb924df0a0e3685e9b9f257e3d83c67c83983fca1942c9ae09c23357c71abfc4c88be15d3f85629c3c70c1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}