{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301091",
    "entityType": "User",
    "nonce": "0xf4307f82dd2163b1efe93c1c88e7acc89653e75f007579dd989a7901abaef018",
    "signature": "0xc5d9614dca5a67356890962608fa928b4a5697c794466cc16190d32fbbc0b7037f30680cde8aad65de1d9091434a3a747b29fd78d3881b3844706740a7bc965b1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}