{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16237",
    "entityType": "User",
    "nonce": "0xc462793dc560d333d52c707043ccc5b0099cddf443524d6748f827b11b96fac4",
    "signature": "0x466539e7561466206be3d944f176969dfdefb7af8e67cdd7d740c90186cc2da666f203a5b7ed20efe22d5bed6059f12114ac72b4c94fca058abbbaf4ef7018b51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}