{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a6ba8ef8dd7cda16fcfc6ba9b49d6ed2e4e38dd29f32e37f33f13c6ac638496",
    "signature": "0x7109b7e3003ae2155c2548307be2aad2febb8e8f465b72f1be51b223177c8e94037efb8a1d0bfda4997a991f45677441b0ebe899a64de21c3d45c79db7fbe28d1b",
    "signer": "0xE87810AdBeb88cee1a26E56469873118eBb15658",
    "userId": "206235141"
  }
}