{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x77cba172fd610a1408c108d8ba26ff81c9aa7cefb233dc9bda99051527bf0c2a",
    "signature": "0x6e5843b38fd9bdd561287c1c3a56c6b3227f4e5afc6230594ce1493df4b45f72358436390569dc58f931fce560d82eb68a5cb71bc3ad1bc7e7f91ab5579311811c",
    "signer": "0x630980A3A6b695C7099AD6f4D467D393A76106Ff",
    "userId": "315465903"
  }
}