{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219883",
    "entityType": "User",
    "nonce": "0xd8ea1aa33739a66356aa78c3a60ddec9dc06f247e0af4bfb6a8a9bbf4d845204",
    "signature": "0xa2132b846591cdd1a1978b78d3cf6c44d0254784074e569167c716990a92d9a275eb128722b8cbfd4f8df8201a004df116ea56de94df9ed55bea41c3f0df61a61c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}