{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0x39acd3045338a9bcc54a21996ccd10db06bea1733b5156b1a19a56e5b37d3375",
    "signature": "0x63cb2c7b5b3bf988bf056d938d2bd98346b46679b3071ee7591835b6615b52d15eabc5a21e5f710fa3a6917777950492260172083e84cc9905f15c945119cf121b",
    "signer": "0xDe6128EEdBB4d15D391871267E286E878C7011B6",
    "userId": "144906061"
  }
}