{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103748",
    "entityType": "User",
    "nonce": "0xee1cf07ce51246ece37adc21b203de862e616c8f50214cb5b1fcdac3f4784141",
    "signature": "0x7d87c720641932d041ef7c613ae676420e44b5aeafae32b76f98f287cf4255e93edf0cb7b99df29986f57e8bd82f277eaf27e81522eddfd44aa8e60574c69b161c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}