{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449938034",
    "entityType": "User",
    "nonce": "0x861629615d69da02b624f4778492ffa7f97939b6af5be683869ebd01bf52e164",
    "signature": "0x4e807a2bd2ab62b5d6c18449147133b126c276e83001fb8f0e984691484e9389173eea5310e462ea66b2573fc3e0328be269963404f7729e1377bbf5798fec8f1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}