{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x5a393d362e5d05056d1a376446cf06961b5acbd7141b59409e272999ccfb5f30",
    "signature": "0x29791fc180e817433b97dbe053463ef62ab841e2541270e697119e7ede761e75420ab3000943fd4b363bd9e83d7535c597067b29a49de622f66e60520c25b9861b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}