{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x58e1f1cfd1f4b411a4cbf1e352f2e9f0bf3ead443aee4cf001c1fda2c89e2b5f",
    "signature": "0x78f528d1fa178094278441ab21fbe438e85f66faee4a53d494c6b79659301c903d4011618779c5394d48f3a4878c658c6c4ded4c933ddf99da612f4ce6b1b9071c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}