{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "575845728",
    "entityType": "User",
    "nonce": "0xb62c287d3afd138998f0a681bbe0caa81eeee23cb5856d6ed2e070beb1e547b5",
    "signature": "0x5a252babe16d48f812d42d12255262f1c367761a37a10ecf663f729fd49717a839f8557cb605aa505a85a324283e232ca079863df51a3aaba1b7a9881a0a36d71c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}