{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51601",
    "entityType": "User",
    "nonce": "0x99a3c84ec18bcf88c714f3b049e87258656de823f64f6dfb39f65e3a5b18f387",
    "signature": "0xbdc88e92446f0624c9b4ca7142a862d386e6ad14e1a6f855f8875e96f399f011648eb39b2bd57d995eb00df22316e600470f97faf259e21946d87a052e8b0b7a1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}