{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774878319",
    "entityType": "User",
    "nonce": "0x9d267cbfdcca5dd6dfc9266b5ca188e0d77d745daa23de7f70e841b8dfcd489f",
    "signature": "0x6ee45253dee1496e3240277071d474004b09b4546b1b2f7cd276164489f46bca648232e01e5fddfb6ff97171c00180a8a0f1b4a94d8ba49fe40543416b6030f51b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}