{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320580",
    "entityType": "User",
    "nonce": "0xdbed18f23d78c0361a998d1e03034b51422022a2adef3144c59eb8c8db828aa6",
    "signature": "0xe40f2373c3b4abbd6b03f1ce514c23f5ceb1bd5e894a6cc0c1fead1a52cc175b367e8f8bbfdca7cb12c30face055f6b87e928e19f6697612e02d0faad31388f01c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}