{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "582278090",
    "entityType": "User",
    "nonce": "0xc3ebac3ac7eab3e83ecbc6e6b812d2ad919e62cd204ab059d56336babc5c5d9c",
    "signature": "0xa1d0e218a35d74938739d63708a2e94ce2fec3f521164ac32d2b46abe3111b437b440e526e3ac4357f5d8581a357b42df888b791d3dcdfbaf7fc6238bdb770021c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}