{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351492052",
    "entityType": "User",
    "nonce": "0xa74cd5f4cb57b2aee647e70a0bf6f0db01df12a2f9188a6b29304c70a634bfd1",
    "signature": "0xd91000d7eff7dd96df2bfadeab078e3e322666b31464019f1db8465dd36aa36052cfc117179b537c164c2ebf67640c161e0621883f561254f9a44a57186be4151c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}