{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257111",
    "entityType": "User",
    "nonce": "0x76aa55b4b241cd2cdb4edc077caadf849b0d72414b11691ec7cf080d78ef84fe",
    "signature": "0xf2034092bf81790b6b44899500fbfb6c862a4ae51a76c070db1ada8b0827b0547cfc3c4cd1c333a4a4d969b492d0ec6f13b98032937203c4caeda73063fa91f21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}