{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334948",
    "entityType": "User",
    "nonce": "0x3e1af2ca9cb57313abe325a942e1a00f83c559152f7ce5cb6170f9ece7cbff1e",
    "signature": "0xa561cf06e8639409f9f2e40bd281295e7dce53cca68c7166f5c32cf5f0ad458b7b70f97cc9425fef88bafc00f64e038159a2251e3ad302b8b3cfb230bf99c5201b",
    "signer": "0x57d13aCae5c2Add3260b4C787f484609E32Ebf88",
    "userId": "870811484"
  }
}