{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "274010868",
    "entityType": "User",
    "nonce": "0x3c0a740e6d87cd7b168e7b67356db0dfd1194cee0b5395d0def4ca2e987da979",
    "signature": "0x555bcf6ffe6898855c15e2f4684058afc33c381ee15c215125615f3ef9a23aab2579f76044870d0e139fa903926db595bdca6a16d4269380bcaabcbfb36816d41c",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}