{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709633854",
    "entityType": "User",
    "nonce": "0x63fb42b9a270e26c97f7373203ffa021070993e18776a79e9066a679c3a4604d",
    "signature": "0xbb18502329ceae45fbcf6bb89bbfb5a82b3277b9718dcbff0546be7753de0406146c98ce5ea787d4961cd3e26531adda65f09c3e1e632ecd4ae411decb79259d1b",
    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}