{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x93a538907cff0d3705f6a1722c583aaaefe86406c266a2adaa1b4d2338b61d60",
    "signature": "0x3dc5709a9dacf6364935a4d772d544c61f559903cc9d0d54b2869e30cb20d1422c5f9d4c68f943f18d3f2975d75e0fdf57d609989da9c8fdb5912ab4003d070f1b",
    "signer": "0xBB6Ab1D303cfA3cD5EBDBa3A85F8659EFf443304",
    "userId": "575673547"
  }
}