{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "60903",
    "entityType": "User",
    "nonce": "0x583c71cbae91c7bfb9c333f0f23eff14f1a9bfaf327453a43bdf3b81e8914b37",
    "signature": "0xf501becabcc9ff06983a662ccb921117db2d30d0cda5b7d0b2abdd8b11c477a318b27858f3ee5404ab5a1665028dec00912ffa5b484c361aaccaf593d838012a1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}