{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44950",
    "entityType": "User",
    "nonce": "0x42c9ef71f0c7e933d28661f447d58b175d7693a0ab15b4a5c12807141d1de38c",
    "signature": "0x02642bcb16aad27a9a3acc2150de045cca42228aca2d0f292b217271382a33a1683c1c525ae3d2da205f7cd08ec7f8af46cf91386c10e8cbc405a5d82660707d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}