{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0xdfaa9cf6ae551fcc291e8ca348130014585897c94d508a1adbb75cd321352bc1",
    "signature": "0xb33d2e52ade9011ab9cd271176ab5f8a621236b28130925df4021b2efc26207f5f00bfbb2cf433388acda701f2c18d2552bd561dc61a4312fb1e1dc577859b831c",
    "signer": "0x7C2169544c0568cB3b210f320356B6A77E891F30",
    "userId": "495616082"
  }
}