{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301610",
    "entityType": "User",
    "nonce": "0x0661dd78b81f657cc86f1a7c7713621559b574119350d2fb8f175852cd4ebd5f",
    "signature": "0xbb774ec7a299a0a47e0153a3710bb09f761e05d102956400a69917df95131a157d02a7b6de43448870192b1d4fdbb91a42b81df3d70ed21bdd803c0f9af3d7731b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}