{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390913",
    "entityType": "User",
    "nonce": "0x9776e77ac83cb9cb15a0ecad2e0df0ced16c9c901261b19f76f3076be4a5c5c1",
    "signature": "0x10a7863003988c3326b10a274e465f066806dc061222fdf47b3a5b44dab9e7a869727aaaf933fd1b6e785a332d3ef27069565b72e087f85a14c7b13d478f7c981b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}