{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13898",
    "entityType": "User",
    "nonce": "0xb40e2fa5f2441dd78927cce8955200d9acae49cdd7cb9ab7d2b95116b638ae3d",
    "signature": "0xaf55307b03adb853a75eec6c128b0ea3ed945aefc2d70d844fd0031ed49216742cce8b33a40798aabbc46724d1100539a2eeca2a7b1f25898364ac02394415c01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}