{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74329",
    "entityType": "User",
    "nonce": "0xa12bc3ee8dc036579a8cdee3d658b664bc341ae8c9f9ff93fc3734348a80f698",
    "signature": "0xc7d7ecf4315a43a05e5375fe5c37a7c55e11545f8d482c1d0b0f9c1f375110de72a0d2439237f4247ba7426b8e1c167deca8ad314cfdb6db689cf2aeea046b681c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}