{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1730737",
    "entityType": "User",
    "nonce": "0x59be33414c3328f58a98a7d9c1b23470c795de7a44b0e6437fe56d29a5c143c8",
    "signature": "0x78396aaef6703d9fa12eb8d2d12efc9e9e2a2858e1de6a810de250e8168a6cf1745f8de994a5aa326540dcd65d19d9b00fa0f1e4d9df29f92b84d63176db6e191c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}