{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172308830",
    "entityType": "User",
    "nonce": "0x3bc2f87d93b686cd4190fa3fb166c174c2a0d5f588780ba1dc2d6b4701eb8437",
    "signature": "0xe98b1880aaff9b5957e05f7bd97605609339ae259fb774c0ba1637f6230f418f2101aca42625d042a8c0bc030c919cbf4023321bbf1db9f820f220d28c848f9c1c",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}