{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0x1f8ee51b871806ff26eaa5178a0dc9717617080bef9e8ceb8eab8b4fd593e483",
    "signature": "0x11f0b6bea9167c9856d6999482323e016f7a8b098f9f8cc15dcd6257a157bbbf6a40bcab0ce454a00774b2f69118bd96fbc2ef71ba63e8d1c3cc5d656b77fd531b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}